1642914domain: NAppears in sequencesa(n) = (4*n+1)*(4*n+2)*(4*n+3).at n=29A001505a(n) = binomial(binomial(binomial(n, 2), 3), 4)/5.at n=1A175991a(n) = binomial(5*(n+1),4)/5, with n >= 0.at n=23A234043