A371221 Inverse permutation to A371220.

1, 3, 2, 5, 7, 9, 11, 13, 15, 4, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43, 45, 47, 49, 51, 53, 55, 57, 59, 61, 63, 65, 67, 69, 71, 73, 75, 77, 79, 8, 81, 83, 85, 87, 89, 91, 93, 95, 6, 97, 10, 99, 101, 103, 105, 107, 109, 111, 113, 115, 117, 12

Offset: 1

Author

Rémy Sigrist, Mar 15 2024

Keywords

• nonn

Examples

			A371220(42) = 231, so a(231) = 42.
		

Links

• Rémy Sigrist, PARI program
• Index entries for sequences that are permutations of the natural numbers

Crossrefs

Cf. A371220.

Programs

PARI

See Links section.

Formula

a(n) <= 2*n.