A131391 Positions of positive integers in A131389, minus 1.

1, 2, 4, 5, 8, 10, 11, 13, 16, 17, 19, 21, 24, 25, 28, 29, 32, 33, 35, 37, 39, 41, 44, 46, 47, 49, 51, 53, 56, 57, 59, 61, 63, 65, 68, 69, 72, 73, 75, 77, 79, 81, 83, 85, 88, 90, 92, 94, 95, 97, 99, 101, 103, 105, 108, 109, 111, 113, 115, 117, 119, 121, 123, 125, 127, 129

Offset: 1

Author

Clark Kimberling, Jul 06 2007

Keywords

• nonn

Comments

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

Examples

			The 5th positive integer to occur in A131391 is 6, which occurs in position 9, so that a(5) = 9 - 1 = 8.
		

Crossrefs

Cf. A131388, A131389, A131390, A131392, A131393, A131394, A131395, A131396, A131397.

Formula

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