Sequence lists numbers k > 1 such that k^2 == phi(k) (mod sigma(k)), where phi = A000010 and sigma = A000203.

A324214

Sequence lists numbers k > 1 such that k^2 == phi(k) (mod sigma(k)), where phi = A000010 and sigma = A000203.

Terms

    a(0) =2a(1) =4a(2) =8a(3) =12a(4) =16a(5) =32a(6) =64a(7) =76a(8) =114a(9) =128a(10) =170a(11) =256a(12) =512a(13) =1024a(14) =1824a(15) =2048a(16) =2166a(17) =4096a(18) =7752a(19) =8192a(20) =16384a(21) =16514a(22) =28896a(23) =32768a(24) =41154a(25) =59400a(26) =65536a(27) =68526a(28) =90914a(29) =131072

External references