A383446 Index of -n in A377090, or -1 if -n does not appear there.

0, 2, 4, 8, 6, 11, 7, 12, 18, 13, 19, 25, 20, 26, 32, 27, 33, 38, 34, 39, 44, 40, 45, 51, 46, 52, 50, 53, 59, 57, 60, 58, 65, 69, 64, 70, 74, 72, 78, 73, 77, 83, 86, 84, 87, 85, 95, 97, 94, 96, 101, 104, 102, 107, 103, 108, 114, 109, 115, 118, 116, 119, 117, 120, 129, 132, 130, 136, 131, 135, 140, 143, 141, 144, 142, 145, 156

Offset: 0

Author

N. J. A. Sloane, Apr 30 2025

Keywords

• nonn

Comments

It is conjectured (see A377090) that every positive integer appears exactly once either here or in A383445.

Links

• N. J. A. Sloane, Table of n, a(n) for n = 0..5003

Crossrefs

Cf. A377090, A383445.