Numbers k such that k+1 is composite and divides 3^k-2^k.

Terms

a(0) =64a(1) =132a(2) =528a(3) =792a(4) =1104a(5) =1648a(6) =1728a(7) =2058a(8) =2320a(9) =2464a(10) =2700a(11) =2820a(12) =4186a(13) =5184a(14) =6304a(15) =6540a(16) =6600a(17) =6696a(18) =6816a(19) =7470a(20) =7612a(21) =8112a(22) =8910a(23) =10584a(24) =10962a(25) =11520a(26) =13212a(27) =13332a(28) =13426a(29) =14700