182536110080domain: NAppears in sequences4-fold convolution of A000302 (powers of 4); expansion of g.f. 1/(1-4*x)^4.at n=14A038846a(n) = ((5*n)!/(n!*(2*n)!))*(Gamma(1+n/2)/Gamma(1+5*n/2)).at n=7A091496