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A175008 Positions of negative terms in A131389. 1
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.

CROSSREFS

Cf. A131389, A175007.

Sequence in context: A091158 A175553 A284684 * A286401 A084791 A310933

Adjacent sequences:  A175005 A175006 A175007 * A175009 A175010 A175011

KEYWORD

nonn

AUTHOR

Clark Kimberling, Apr 03 2010

STATUS

approved

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Last modified April 6 22:23 EDT 2020. Contains 333291 sequences. (Running on oeis4.)