A090446 Alternating row sums of triangle A090441.

1, 0, 1, 0, 2, 0, -3118, 0, 442703522, 0, -13347247554466558, 0, 148707543361999816132646402, 0, -915656396935528170667809129675491481598, 0, 4312599964271304706198945861064290667787580951294464002, 0

Offset

-1,5

Links

Table of n, a(n) for n=-1..16.

Formula

a(n)= sum(A090441(n, m)*(-1)^m, m=0..n+1), n>=-1.

Crossrefs

Sequence in context: A036108 A265594 A269904 * A270830 A270829 A104157

Adjacent sequences: A090443 A090444 A090445 * A090447 A090448 A090449

Keyword

sign,easy

Author

Wolfdieter Lang, Dec 23 2003

Status

approved