Square array T(n,k), n >= 1, k >= 1, read by antidiagonals, where T(n,k) = Sum_{1 <= x_1, x_2, ..., x_k <= n} gcd(x_1, x_2, ..., x_k, n)^k.

A372938

Square array T(n,k), n >= 1, k >= 1, read by antidiagonals, where T(n,k) = Sum_{1 <= x_1, x_2, ..., x_k <= n} gcd(x_1, x_2, ..., x_k, n)^k.

Terms

    a(0) =1a(1) =1a(2) =3a(3) =1a(4) =7a(5) =5a(6) =1a(7) =15a(8) =17a(9) =8a(10) =1a(11) =31a(12) =53a(13) =40a(14) =9a(15) =1a(16) =63a(17) =161a(18) =176a(19) =49a(20) =15a(21) =1a(22) =127a(23) =485a(24) =736a(25) =249a(26) =119a(27) =13a(28) =1a(29) =255

External references