A244747 Positions at which powers of 2 occur in A051145.

1, 2, 3, 5, 6, 9, 12, 17, 29, 45, 48, 81, 105, 108, 177, 245, 323, 324, 569, 648, 893, 1277, 1296, 2121, 2592, 3221, 4853, 5184, 7697, 11015, 15333, 15552, 25841, 31104, 40157, 59213, 84239, 93312, 135107, 184679, 265277, 279936, 445029, 606509, 830411, 839808

Offset: 1

Author

Reinhard Zumkeller, Jul 05 2014

Keywords

• nonn

Comments

A209229(A051145(a(n))) = 1;

the definition of this sequence was the original definition of A051147.

Links

• Rémy Sigrist, C++ program

Crossrefs

Cf. A209229, A051147 (subsequence).

Programs

Haskell

import Data.List (findIndices)
a244747 n = a244747_list !! (n-1)
a244747_list = findIndices ((== 1) . a209229) a051145_list
(C++)
See Links section.

Extensions

More terms from Rémy Sigrist, Oct 09 2022