A158567 First differences of A157680.

-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

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: A365953 A365955 A368831 * A215832 A021160 A354887

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