OFFSET
1,6
LINKS
Seiichi Manyama, Antidiagonals n = 1..140, flattened
EXAMPLE
Square array begins:
1, 1, 1, 1, 1, 1, ...
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, ...
MATHEMATICA
Table[Function[k, Sum[If[GCD[n, j] == 1, j^k, 0], {j, 1, n}]][i - n], {i, 0, 12}, {n, 1, i}] // Flatten
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Ilya Gutkovskiy, May 29 2019
STATUS
approved