(+2)-sigma perfect numbers: numbers k such that (+2)sigma(k) = 2*k, where (+2)sigma(k) = A107758(k).

A052396

(+2)-sigma perfect numbers: numbers k such that (+2)sigma(k) = 2*k, where (+2)sigma(k) = A107758(k).

Terms

    a(0) =2a(1) =4a(2) =8a(3) =16a(4) =32a(5) =63a(6) =64a(7) =128a(8) =256a(9) =512a(10) =1024a(11) =2048a(12) =4096a(13) =8192a(14) =16384a(15) =32768a(16) =34587a(17) =65536a(18) =131072a(19) =262144a(20) =524288a(21) =1048576a(22) =2097152a(23) =4194304a(24) =8388608a(25) =16777216a(26) =33554432a(27) =67108864a(28) =134217728a(29) =170271801

External references