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

Offset: 1

Author

Clark Kimberling, Jul 06 2007

Keywords

• nonn

Comments

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

Examples

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

Crossrefs

Cf. A131388, A131389, A131390, A131391, A131393, A131394, A131395, A131396, A131397.

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,...)