3631712domain: NAppears in sequencesa(n) = S1(n,5), where S1(n,t) = Sum_{k=0..n} k^t * Sum_{j=0..k} binomial(n,j).at n=7A089662a(n) = 16 times the sum of the cubes of the divisors of 2*n+1.at n=30A318937