208470015domain: NAppears in sequencesExpansion of 1/((1-2*x)^5*(1-x)).at n=15A211386Square array read by antidiagonals: T(n,k) = Sum_{j = 0..n*k} binomial(n+j-1,j)*2^j; n,k >= 0.at n=39A333560a(n) = Sum_{j = 0..3*n} binomial(n+j-1,j)*2^j.at n=5A333562