536155domain: NAppears in sequencesa(n) = Sum_{k=0..7} binomial(n,k).at n=24A008860Expansion of g.f. (1+z)^(24)/(1-z).at n=7A171445a(n) = Sum_{k=0..n} binomial(3*n+3,k).at n=7A387008a(n) = Sum_{k=0..n} binomial(4*n-4,k).at n=7A387034