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Revision History for A240452

(Underlined text is an addition; strikethrough text is a deletion.)

Showing all changes.
A240452 Number of partitions p of n such that (sum of parts with multiplicity 1) >= (sum of all other parts).
(history; published version)
#6 by Wesley Ivan Hurt at Mon Apr 06 19:23:47 EDT 2020
STATUS

editing

approved

#5 by Wesley Ivan Hurt at Mon Apr 06 19:23:38 EDT 2020
MATHEMATICA

Map[Length, t] (* A240447 with alternating 0s0's *)

STATUS

approved

editing

#4 by N. J. A. Sloane at Mon Apr 14 11:11:58 EDT 2014
STATUS

proposed

approved

#3 by Clark Kimberling at Sun Apr 13 09:20:51 EDT 2014
STATUS

editing

proposed

#2 by Clark Kimberling at Sat Apr 05 15:57:49 EDT 2014
NAME

allocatedNumber of partitions p of n such that (sum of parts with multiplicity 1) >= (sum of forall Clarkother Kimberlingparts).

DATA

1, 1, 1, 2, 3, 4, 6, 8, 13, 17, 22, 28, 43, 55, 71, 87, 124, 153, 202, 243, 332, 401, 511, 608, 828, 984, 1236, 1458, 1903, 2245, 2826, 3301, 4245, 4963, 6119, 7108, 9064, 10508, 12837, 14834, 18584, 21442, 26150, 30028, 37139, 42599, 51356, 58742, 72370

OFFSET

0,4

FORMULA

a(n) + A240449(n) = A000041(n) for n >= 0.

EXAMPLE

a(6) counts these 6 partitions: 6, 51, 42, 411, 321, 3111.

MATHEMATICA

z = 30; p[n_] := p[n] = IntegerPartitions[n]; f[p_] := f[p] = First[Transpose[p]];

ColumnForm[t = Table[Select[p[n], 2 Total[f[Select[#, Last[#] == 1 &] /. {} -> {{0, 0}}]] &[Tally[#]] < n &], {n, 0, z}]] (* shows the partitions *)

Map[Length, t] (* A240448 *)

ColumnForm[t = Table[Select[p[n], 2 Total[f[Select[#, Last[#] == 1 &] /. {} -> {{0, 0}}]] &[Tally[#]] <= n &], {n, 0, z}]] (* shows the partitions *)

Map[Length, t] (* A240449 *)

ColumnForm[t = Table[Select[p[n], 2 Total[f[Select[#, Last[#] == 1 &] /. {} -> {{0, 0}}]] &[Tally[#]] == n &], {n, 0, z}]] (* shows the partitions *)

Map[Length, t] (* A240447 with alternating 0s *)

ColumnForm[t = Table[Select[p[n], 2 Total[f[Select[#, Last[#] == 1 &] /. {} -> {{0, 0}}]] &[Tally[#]] > n &], {n, 0, z}]] (* shows the partitions *)

Map[Length, t] (* A240451 *)

ColumnForm[t = Table[Select[p[n], 2 Total[f[Select[#, Last[#] == 1 &] /. {} -> {{0, 0}}]] &[Tally[#]] >= n &], {n, 0, z}]] (* shows the partitions *)

Map[Length, t] (* A240452 *)

(* Peter J. C. Moses, Apr 02 2014 *)

CROSSREFS

Cf. A240448, A240447, A240449, A240451, A000041.

KEYWORD

allocated

nonn,easy

AUTHOR

Clark Kimberling, Apr 05 2014

STATUS

approved

editing

Discussion
Sat Apr 12 18:06
OEIS Server: This sequence has not been edited or commented on for a week
yet is not proposed for review.  If it is ready for review, please
visit https://oeis.org/draft/A240452 and click the button that reads
"These changes are ready for review by an OEIS Editor."

Thanks.
  - The OEIS Server
#1 by Clark Kimberling at Sat Apr 05 10:23:16 EDT 2014
NAME

allocated for Clark Kimberling

KEYWORD

allocated

STATUS

approved

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Last modified August 18 23:41 EDT 2024. Contains 375284 sequences. (Running on oeis4.)