68405domain: NAppears in sequencesa(n) = Sum_{j=1..n} binomial(n^2, j).at n=4A007819a(n) = n*(94 + 5*n + 25*n^2 - 5*n^3 + n^4)/120.at n=25A057703a(n) = 2*a(n-1) + 4*a(n-2) - 6*a(n-3) - 3*a(n-4).at n=15A136201Numbers that are both the sum of three consecutive primes and the sum of three consecutive squares.at n=8A388071