Nonprimes k such that k divides 3^(k-1) - 2^(k-1).

Terms

a(0) =1a(1) =65a(2) =133a(3) =529a(4) =793a(5) =1105a(6) =1649a(7) =1729a(8) =2059a(9) =2321a(10) =2465a(11) =2701a(12) =2821a(13) =4187a(14) =5185a(15) =6305a(16) =6541a(17) =6601a(18) =6697a(19) =6817a(20) =7471a(21) =7613a(22) =8113a(23) =8911a(24) =10585a(25) =10963a(26) =11521a(27) =13213a(28) =13333a(29) =13427