A355896 -id:A355896

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

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

Search: a355896 -id:a355896

Displaying 1-1 of 1 result found.

page 1

A355895

Even terms in A354790, divided by 2, in order of appearance.

+0
2

1, 3, 11, 7, 17, 41, 37, 83, 79, 109, 241, 239, 499, 491, 1117, 1109, 2539, 2531, 5623, 5591, 11471, 11467, 23369, 23357

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

OFFSET

1,2

COMMENTS

The even terms in A354790 appear at indices 2, 7, 15, 31, 63, 127, 255, 511, 1023, 2047, 4095, 8191, 16383, 32767, 65535, ... and conjecturally at indices 2^k-1 for all k >= 3.

LINKS

Table of n, a(n) for n=1..24.

CROSSREFS

Cf. A354790, A355896.

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Aug 27 2022

EXTENSIONS

a(16)-a(24) from Rémy Sigrist, Aug 29 2022

STATUS

approved

page 1

Search completed in 0.008 seconds