Square array A(n,k), n >= 1, k >= 0, read by antidiagonals, where A(n,k) is Sum_{d|n} d^(d^k).
A308674
Square array A(n,k), n >= 1, k >= 0, read by antidiagonals, where A(n,k) is Sum_{d|n} d^(d^k).
Terms
- a(0) =1a(1) =1a(2) =3a(3) =1a(4) =5a(5) =4a(6) =1a(7) =17a(8) =28a(9) =7a(10) =1a(11) =257a(12) =19684a(13) =261a(14) =6a(15) =1a(16) =65537a(18) =4294967313a(19) =3126a(20) =12a(21) =1a(22) =4294967297a(26) =46688a(27) =8
External references
- oeis: A308674