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.
CROSSREFS
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Aug 27 2022
EXTENSIONS
a(16)-a(24) from Rémy Sigrist, Aug 29 2022
STATUS
approved