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

Author

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

Keywords

• nonn
• base

Comments

Conjecture: The sequence is a permutation of A057716.

Links

• Rémy Sigrist, PARI program

Crossrefs

Cf. A057716, A087207, A361321.

Programs

PARI

\\ See Links section.

Formula

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