A308883 a(n) = position of 1 in n-th column of array in A274630.

1, 4, 7, 2, 6, 5, 3, 11, 14, 17, 8, 20, 19, 9, 24, 27, 10, 30, 13, 12, 31, 35, 38, 15, 41, 40, 16, 45, 48, 18, 21, 50, 53, 56, 22, 59, 58, 23, 63, 26, 25, 67, 70, 73, 28, 72, 75, 29, 79, 32, 82, 85, 33, 88, 87, 34, 92, 37, 36, 96, 99, 102, 39, 101, 104, 107, 42

Offset: 1

Author

N. J. A. Sloane, Jun 30 2019

Keywords

• nonn

Comments

Also, a(n) = 1 + position of 0 in column n-1 of A308201.

Equals A307281 + 1. This is a self-inverse permutation of the positive integers.

Crossrefs

Cf. A274630, A308201, A307281.