(n^(p-1) - 1)/p^2 mod p, where p is the first prime that divides (n^(p-1) - 1)/p.

Terms

a(0) =0a(1) =487a(2) =4a(3) =974a(4) =1a(5) =30384a(6) =1a(7) =1a(8) =0a(9) =2a(10) =46a(11) =1571a(12) =1a(13) =17a(14) =24160a(15) =855a(16) =0a(17) =4a(18) =1a(19) =189a(20) =1a(21) =5a(22) =11a(23) =1a(24) =0a(25) =0a(26) =1a(27) =0a(28) =1a(29) =3