%I #2 Mar 30 2012 18:37:08

%S 1,0,1,-3,19,-223,5024,-221357,19276981,-3337101203,1151813749025,

%T -793860037771900,1093434531716214447,-3010922236710802264555,

%U 16578683647583849207539977,-182552322688781602767983229935

%N Row sums of triangle A136502.

%F G.f.: 1/(1-x) = Sum_{n>=0} a(n)*x^n*(1+x)^(2^n).

%o (PARI) {a(n)=local(M=matrix(n+1,n+1,r,c,binomial(2^(c-1),r-c))); sum(k=0,n,(M^-1)[n+1,k+1])}

%Y Cf. A136502.

%K sign

%O 0,4

%A _Paul D. Hanna_, Jan 01 2008