The On-Line Encyclopedia of Integer Sequences (OEIS)

The OEIS is supported by the many generous donors to the OEIS Foundation.

Revision History for A268693

(Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing all changes.

A268693

Odd numbers that are not of the form p + 2^a + 2^b with b > a > 0, and p prime.
(history; published version)

#9 by Alois P. Heinz at Tue Jun 14 19:15:12 EDT 2022

STATUS

proposed

approved

#8 by Kevin P. Thompson at Tue Jun 14 18:44:36 EDT 2022

STATUS

editing

proposed

#7 by Kevin P. Thompson at Tue Jun 14 18:44:13 EDT 2022

LINKS

Kevin P. Thompson, <a href="/A268693/b268693.txt">Table of n, a(n) for n = 1..392</a>

STATUS

approved

editing

#6 by N. J. A. Sloane at Thu Feb 11 19:18:55 EST 2016

STATUS

proposed

approved

#5 by Arkadiusz Wesolowski at Thu Feb 11 17:47:56 EST 2016

STATUS

editing

proposed

#4 by Arkadiusz Wesolowski at Thu Feb 11 12:22:08 EST 2016

COMMENTS

Not every member of this sequence greater than 7 is divisible by 255, see A268694.

#3 by Arkadiusz Wesolowski at Thu Feb 11 12:12:23 EST 2016

NAME

Odd numbers that are not of the form p + 2^a + 2^b with b > a > 0, and p prime.

COMMENTS

This sequence is infinite; in particular, 2^(2^n) - 1 is in this sequence for each n > 2.

CROSSREFS

Cf. A232565, A268694. Supersequence of A156695.

#2 by Arkadiusz Wesolowski at Thu Feb 11 12:01:30 EST 2016

NAME

allocated for Arkadiusz Wesolowski

.

DATA

1, 3, 5, 7, 255, 15045, 20655, 25755, 39525, 44115, 46665, 65535, 70125, 97155, 100215, 132855, 144465, 162945, 196605, 200175, 277695, 280755, 327675, 441915, 469965, 548505, 688245, 720375, 770355, 773925, 789225, 1017705, 1027395, 1110015, 1114095, 1127355

OFFSET

1,2

KEYWORD

allocated

nonn

AUTHOR

Arkadiusz Wesolowski, Feb 11 2016

STATUS

approved

editing

#1 by Arkadiusz Wesolowski at Thu Feb 11 12:01:30 EST 2016

NAME

allocated for Arkadiusz Wesolowski

KEYWORD

allocated

STATUS

approved