976562500000domain: NAppears in sequencesa(n) = (12*n + 10)^5.at n=20A017645a(n) = (2n)^n * n^(2n).at n=4A062077Hankel transform of central coefficients of (1+k*x+5x^2)^n, k arbitrary integer.at n=5A127947a(n) = 5^n * n^5.at n=10A198402a(n) = 10^n * n^10.at n=5A198479