A361322 The binary expansion of a(n) specifies which primes divide A361321(n).

0, 3, 5, 12, 10, 18, 17, 9, 40, 34, 6, 20, 24, 11, 33, 36, 68, 65, 129, 130, 66, 72, 13, 7, 258, 264, 136, 132, 21, 257, 288, 48, 19, 513, 516, 14, 35, 1025, 1028, 260, 259, 2049, 2052, 22, 514, 520, 25, 4097, 4098, 1026, 1032, 41, 8193, 8194, 2050, 2056, 73

Offset

1,2

Comments

Conjecture: The sequence is a permutation of A057716.

Links

Table of n, a(n) for n=1..57.

Rémy Sigrist, PARI program

Formula

a(n) = A087207(A360519(n)).

Prog

(PARI) See Links section.

Crossrefs

Cf. A057716, A087207, A361321.

Sequence in context: A358336 A286900 A361111 * A037221 A182537 A259309

Adjacent sequences: A361319 A361320 A361321 * A361323 A361324 A361325

Keyword

nonn,base

Author

Scott R. Shannon, Rémy Sigrist and N. J. A. Sloane, Mar 09 2023

Status

approved