A132165 Alternating row sums of triangle A134141 (S1p(7)).

1, 6, 36, 174, -174, -26076, -596616, -10334556, -143486244, -1157102136, 19891298736, 1443409042536, 52915941558936, 1542313273333104, 37123741709607456, 635436136388469744, -1073509544497887216, -801332217409556182176, -51221481393025808800704

Offset

1,2

Links

Table of n, a(n) for n=1..19.

Formula

a(n)= sum(A134141(n,m)*(-1)^(m-1),m=1..n),n>=1.

E.g.f.: 1 - exp(-(1-(1-x)^6)/(6*(1-x)^6)). Cf. e.g.f. first column of A134141.

Crossrefs

Cf. A132164 (row sum of A134141).

Sequence in context: A293068 A213294 A293886 * A200573 A224130 A283197

Adjacent sequences: A132162 A132163 A132164 * A132166 A132167 A132168

Keyword

sign,easy

Author

Wolfdieter Lang, Oct 12 2007

Status

approved