Number of Pythagorean quadruples mod n; i.e., number of solutions to w^2 + x^2 + y^2 = z^2 mod n.

Terms

a(0) =1a(1) =8a(2) =21a(3) =64a(4) =145a(5) =168a(6) =301a(7) =512a(8) =621a(9) =1160a(10) =1221a(11) =1344a(12) =2353a(13) =2408a(14) =3045a(15) =4096a(16) =5185a(17) =4968a(18) =6517a(19) =9280a(20) =6321a(21) =9768a(22) =11661a(23) =10752a(24) =18625a(25) =18824a(26) =16281a(27) =19264a(28) =25201a(29) =24360