Composite numbers k that divide 3^k - 2^k - 1, excluding powers of 2, 3 and 7.

Terms

a(0) =45a(1) =245a(2) =405a(3) =561a(4) =637a(5) =639a(6) =833a(7) =891a(8) =1105a(9) =1377a(10) =1576a(11) =1729a(12) =2465a(13) =2701a(14) =2821a(15) =3321a(16) =3645a(17) =4753a(18) =5589a(19) =6345a(20) =6517a(21) =6601a(22) =7885a(23) =8911a(24) =10365a(25) =10585a(26) =12005a(27) =13833a(28) =15841a(29) =17152