A355436 Inverse permutation to A355435.

1, 2, 4, 3, 8, 5, 16, 6, 13, 7, 32, 12, 64, 15, 9, 11, 128, 20, 256, 10, 17, 31, 512, 14, 25, 63, 29, 18, 1024, 24, 2048, 22, 33, 127, 49, 21, 4096, 255, 61, 23, 8192, 28, 16384, 30, 52, 511, 32768, 19, 113, 26, 125, 62, 65536, 36, 57, 27, 253, 1023, 131072

Offset

1,2

Links

Rémy Sigrist, Table of n, a(n) for n = 1..10000

Rémy Sigrist, PARI program

Formula

a(prime(n)) = 2^n for any n > 0 (where prime(n) denotes the n-th prime number).

Example

A355435(28) = 42, so a(42) = 28.

Prog

(PARI) See Links section.

Crossrefs

Cf. A355435.

Sequence in context: A242722 A120242 A322864 * A352713 A054427 A363537

Adjacent sequences: A355433 A355434 A355435 * A355437 A355438 A355439

Keyword

nonn

Author

Rémy Sigrist, Jul 02 2022

Status

approved