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A308883 a(n) = position of 1 in n-th column of array in A274630. 1
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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

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.

LINKS

Table of n, a(n) for n=1..67.

CROSSREFS

Cf. A274630, A308201, A307281.

Sequence in context: A071932 A246433 A324273 * A139348 A021683 A248179

Adjacent sequences:  A308880 A308881 A308882 * A308884 A308885 A308886

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jun 30 2019

STATUS

approved

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Last modified March 5 16:12 EST 2021. Contains 341825 sequences. (Running on oeis4.)