A054406 - OEIS

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A054406

Beatty sequence for (3+sqrt 3)/2; complement of A022838.

2, 4, 7, 9, 11, 14, 16, 18, 21, 23, 26, 28, 30, 33, 35, 37, 40, 42, 44, 47, 49, 52, 54, 56, 59, 61, 63, 66, 68, 70, 73, 75, 78, 80, 82, 85, 87, 89, 92, 94, 97, 99, 101, 104, 106, 108, 111, 113, 115, 118, 120, 123, 125, 127, 130, 132, 134, 137, 139, 141, 144, 146

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Numbers k such that A194979(k+1) = A194979(k). - Clark Kimberling, Dec 02 2014

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..10000

Clark Kimberling, Beatty sequences and trigonometric functions, Integers 16 (2016), #A15.

Eric Weisstein's World of Mathematics, Beatty Sequence

Index entries for sequences related to Beatty sequences

MAPLE

A054406 := proc(n) n*(3+sqrt(3))/2 ; floor(%) ; end proc: # R. J. Mathar, Feb 26 2011

MATHEMATICA

a054406[n_Integer] := Floor[# (3 + Sqrt[3])/2] & /@ Range[n]; a054406[62] (* Michael De Vlieger, Dec 14 2014 *)

PROG

(Magma) [Floor(n*(3+Sqrt(3))/2): n in [1..70]]; // Vincenzo Librandi, Oct 25 2011

(PARI) is(n)=sqrtint((n+1)^2\3)==sqrtint(n^2\3) \\ Charles R Greathouse IV, Nov 01 2021

CROSSREFS

Cf. A194143 (partial sums), A182778 (even bisection), A184799 (prime terms).

Cf. A022838 (complement), A026255.

Cf. A194979.

Sequence in context: A024812 A047349 A329842 * A292647 A356085 A307645

Adjacent sequences: A054403 A054404 A054405 * A054407 A054408 A054409

KEYWORD

nonn

AUTHOR

Eric W. Weisstein

STATUS

approved