A175008 - OEIS

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A175008

Positions of negative terms in A131389.

4, 7, 8, 10, 13, 15, 16, 19, 21, 23, 24, 27, 28, 31, 32, 35, 37, 39, 41, 43, 44, 46, 49, 51, 53, 55, 56, 59, 61, 63, 65, 67, 68, 71, 72, 75, 77, 79, 81, 83, 85, 87, 88, 90, 92, 94, 97, 99, 101, 103, 105, 107, 108, 111, 113, 115, 117, 119, 121, 123, 125, 127, 129, 132, 133

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Is a(n+1)-a(n) always 1,2 or 3?

LINKS

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

EXAMPLE

The first 20 terms of A131389 are

0,1,2,-1,3,4,-2,-3,6,-4,5,7,-5,8,-6,-7,9,10,-8,11.

Positions occupied by negatives are

4,7,8,10,13,15,16,19.