A355213 Inverse permutation to A355212.

1, 2, 4, 6, 8, 3, 10, 12, 14, 7, 16, 5, 18, 11, 20, 22, 24, 13, 26, 21, 28, 30, 32, 29, 34, 36, 38, 40, 42, 35, 44, 46, 15, 23, 9, 37, 48, 50, 19, 51, 53, 39, 55, 57, 59, 31, 61, 58, 63, 65, 67, 69, 71, 66, 73, 64, 27, 41, 75, 68, 77, 45, 79, 81, 83, 80, 85

Offset

1,2

Comments

Equivalently: lexicographically earliest sequence of distinct positive integers such that a(1) = 1, and for any m, n > 1, if abs(a(n) - a(m)) = 1, then gcd(m, n) > 1.

Links

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

Rémy Sigrist, PARI program

Index entries for sequences that are permutations of the natural numbers

Example

A355212(39) = 42 so a(42) = 39.

Prog

(PARI) See Links section.

Crossrefs

Cf. A355212.

Sequence in context: A354721 A355506 A241012 * A064745 A304090 A218454

Adjacent sequences: A355210 A355211 A355212 * A355214 A355215 A355216

Keyword

nonn

Author

Rémy Sigrist, Jun 24 2022

Status

approved