Sequence lists numbers k > 1 such that k^4 == d(k) (mod sigma(k)), where d = A000005 and sigma = A000203.

A323251

Sequence lists numbers k > 1 such that k^4 == d(k) (mod sigma(k)), where d = A000005 and sigma = A000203.

Terms

    a(0) =22a(1) =80a(2) =625a(3) =1664a(4) =2392a(5) =4030a(6) =5434a(7) =5830a(8) =6118a(9) =6536a(10) =9614a(11) =11438a(12) =12958a(13) =13184a(14) =15064a(15) =15314a(16) =17528a(17) =18632a(18) =18970a(19) =22570a(20) =23254a(21) =25234a(22) =29810a(23) =32128a(24) =33784a(25) =34846a(26) =36938a(27) =37910a(28) =40610a(29) =43054

External references