2^(p-1) modulo p^3, where p = prime(n).

Terms

a(0) =2a(1) =4a(2) =16a(3) =64a(4) =1024a(5) =1899a(6) =1667a(7) =1502a(8) =8856a(9) =10122a(10) =14602a(11) =20573a(12) =27840a(13) =10321a(14) =92638a(15) =86179a(16) =35283a(17) =54291a(18) =126363a(19) =211865a(20) =313171a(21) =338516a(22) =114209a(23) =317375a(24) =598297a(25) =702961a(26) =822971a(27) =1089047a(28) =684521a(29) =928748