Numbers k such that sigma(k) = sigma(k+13).

Terms

a(0) =182a(1) =782a(2) =1965a(3) =2486a(4) =2678a(5) =2685a(6) =12141a(7) =12441a(8) =17342a(9) =21242a(10) =27686a(11) =34905a(12) =35505a(13) =35853a(14) =38662a(15) =38985a(16) =56732a(17) =63578a(18) =104342a(19) =109461a(20) =192933a(21) =198909a(22) =222122a(23) =236966a(24) =245349a(25) =251654a(26) =256322a(27) =261885a(28) =262238a(29) =324441