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A158567 First differences of A157680. 0
-1, 0, -1, -6, 4, 1, 0, -1, 0, -1, 4, -6, 1, 4, 0, -1, 0, -1, 4, -6, 1, 0, -1, 0, -1, 4, -6, 1, 4, 4, -6, 1, 4, -6, 4, 1, 1, 1, 0, -1, 0, -1, -6, 4, 1, 0, -1, 0, -1, 4, -6, 1, 4, 0, -1, 0, -1, 4, -6, 1, 0, -1, 0, -1, 4, -6, 1, 4, 4, -6, 1, 4, -6, 4, 1, 1, 1, -9, 9, 0, -1, -6, 4, 1, 0, -1, 0, -1, 4 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..89.

FORMULA

a(n)= A157680(n+1)-A157680(n).

CROSSREFS

Sequence in context: A197581 A323525 A166978 * A215832 A021160 A060780

Adjacent sequences:  A158564 A158565 A158566 * A158568 A158569 A158570

KEYWORD

sign,base,less

AUTHOR

Paul Curtz, Mar 21 2009

EXTENSIONS

Edited and extended by R. J. Mathar, Apr 08 2009

STATUS

approved

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Last modified May 11 13:21 EDT 2021. Contains 343791 sequences. (Running on oeis4.)