Sum of squares of primes = 2 mod 3 dividing n.

Terms

a(0) =0a(1) =4a(2) =0a(3) =4a(4) =25a(5) =4a(6) =0a(7) =4a(8) =0a(9) =29a(10) =121a(11) =4a(12) =0a(13) =4a(14) =25a(15) =4a(16) =289a(17) =4a(18) =0a(19) =29a(20) =0a(21) =125a(22) =529a(23) =4a(24) =25a(25) =4a(26) =0a(27) =4a(28) =841a(29) =29