A308477 - OEIS

A308477

Square array A(n,k), n >= 1, k >= 0, read by antidiagonals: A(n,k) = Sum_{j=1..n, gcd(n,j) = 1} j^k.

1, 1, 1, 1, 1, 2, 1, 1, 3, 2, 1, 1, 5, 4, 4, 1, 1, 9, 10, 10, 2, 1, 1, 17, 28, 30, 6, 6, 1, 1, 33, 82, 100, 26, 21, 4, 1, 1, 65, 244, 354, 126, 91, 16, 6, 1, 1, 129, 730, 1300, 626, 441, 84, 27, 4, 1, 1, 257, 2188, 4890, 3126, 2275, 496, 159, 20, 10, 1, 1, 513, 6562, 18700, 15626, 12201, 3108, 1053, 140, 55, 4

(list; table; graph; refs; listen; history; text; internal format)

OFFSET

1,6

LINKS

Seiichi Manyama, Antidiagonals n = 1..140, flattened

EXAMPLE

Square array begins:

1, 1, 1, 1, 1, 1, ...

2, 3, 5, 9, 17, 33, ...

2, 4, 10, 28, 82, 244, ...

4, 10, 30, 100, 354, 1300, ...

2, 6, 26, 126, 626, 3126, ...