Related to a bound for Giuga's conjecture.

Terms

a(0) =9a(1) =27a(2) =65a(3) =114a(4) =127a(5) =202a(6) =278a(7) =323a(8) =554a(9) =554a(10) =554a(11) =704a(12) =704a(13) =704a(14) =704a(15) =704a(16) =751a(17) =751a(18) =825a(19) =825