Array read by antidiagonals: T(n,k) = phi(k^n-1)/n, where phi is Euler's totient function (A000010), n >= 1, k >= 2.
A369291
Array read by antidiagonals: T(n,k) = phi(k^n-1)/n, where phi is Euler's totient function (A000010), n >= 1, k >= 2.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =2a(5) =2a(6) =2a(7) =4a(8) =4a(9) =2a(10) =4a(11) =4a(12) =12a(13) =8a(14) =6a(15) =2a(16) =12a(17) =20a(18) =32a(19) =22a(20) =6a(21) =6a(22) =8a(23) =56a(24) =48a(25) =120a(26) =48a(27) =18a(28) =4a(29) =18
External references
- oeis: A369291