A131392 - OEIS

A131392

Positions of negative integers in A131389, minus 1.

3, 6, 7, 9, 12, 14, 15, 18, 20, 22, 23, 26, 27, 30, 31, 34, 36, 38, 40, 42, 43, 45, 48, 50, 52, 54, 55, 58, 60, 62, 64, 66, 67, 70, 71, 74, 76, 78, 80, 82, 84, 86, 87, 89, 91, 93, 96, 98, 100, 102, 104, 106, 107, 110, 112, 114, 116, 118, 120, 122, 124, 126, 128, 131, 132

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OFFSET

1,1

COMMENTS

If A131389 is a permutation of the integers, as conjectured, then A131392 is the complement of A131391.

LINKS

Table of n, a(n) for n=1..65.

FORMULA

a(n) = -1 + position of the n-th negative integer in the sequence A131389=(0,1,2,-1,3,4,-2,-3,6,-4,5,...)

EXAMPLE

The 5th negative integer to occur in A131391 is -5, which occurs in position 13, so that a(5)=13-1=12.

CROSSREFS