49413domain: NAppears in sequencesNumber of Pythagorean quadruples mod n; i.e., number of solutions to w^2 + x^2 + y^2 = z^2 mod n.at n=38A096018a(n) = n*(n+1)*(n+2)*(n+3)*(1+3*n+n^2)/120.at n=11A101094Row sums of triangle A108290.at n=5A108292Number of primes of the form (x+1)^7 - x^7 less than 10^n.at n=35A221977