A258105 Inverse to sequence defined as {b(1) = 1, and for n>1: b(n) = A257906(n)}, which is conjectured to be a permutation of natural numbers.

1, 2, 4, 6, 3, 10, 5, 8, 7, 12, 14, 18, 20, 11, 9, 16, 24, 22, 13, 26, 15, 28, 19, 32, 21, 34, 30, 36, 38, 40, 17, 44, 25, 42, 23, 48, 50, 54, 27, 52, 46, 60, 29, 56, 58, 62, 33, 64, 66, 71, 35, 69, 31, 75, 37, 77, 39, 68, 41, 81, 73, 79, 45, 83, 85, 89, 43, 87, 93, 97, 49, 91, 51, 99, 55, 101, 95, 103, 53, 105, 47, 107, 61

Offset: 1

Author

Antti Karttunen, May 20 2015

Keywords

• nonn

Comments

In case the sequence b is not a permutation of natural numbers, then neither this will be and we set a(n) = -1 for those n > 1 that do not occur in A257906.

Links

• Antti Karttunen, Table of n, a(n) for n = 1..7575
• Index entries for sequences that are permutations of the natural numbers

Crossrefs

Cf. A257906, A257907.