login
Alternating row sums of triangle A132057 (s2(8)).
1

%I #2 Mar 31 2012 13:20:14

%S 1,27,925,35069,1406679,58491537,2493656187,108280678092,

%T 4768395658314,212335592489544,9540877059969102,431908789303835976,

%U 19675192863275361294,901089855844979674068,41459199062515242868098

%N Alternating row sums of triangle A132057 (s2(8)).

%F a(n)= -sum(A132057(n, m)*(-1)^m, m=1..n), n>=1.

%F G.f.: (-1 +(1-49*x)^(-1/7))/(6+(1-49*x)^(-1/7)).

%Y Cf. A092087 (alternating row sums of s2(7)=A092083).

%K nonn,easy

%O 1,2

%A _Wolfdieter Lang_ Sep 11 2007