Number of solutions to 1 +- 8 +- 27 +- ... +- n^3 == 0 (mod n).

Terms

a(0) =1a(1) =0a(2) =2a(3) =4a(4) =4a(5) =0a(6) =20a(7) =48a(8) =80a(9) =0a(10) =94a(11) =344a(12) =424a(13) =0a(14) =1096a(15) =4864a(16) =3856a(17) =0a(18) =16444a(19) =52432a(20) =65248a(21) =0a(22) =182362a(23) =720928a(24) =671104a(25) =0a(26) =4152320a(27) =11156656a(28) =9256396a(29) =0