OFFSET
0,6
LINKS
Seiichi Manyama, Antidiagonals n = 0..52, flattened
FORMULA
A(0,k) = 1 and A(n,k) = -(1/n) * Sum_{j=1..n} (Sum_{d|j} d^(2+k*j)) * A(n-j,k) for n > 0.
EXAMPLE
Square array begins:
1, 1, 1, 1, 1, ...
-1, -1, -1, -1, -1, ...
-2, -8, -32, -128, -512, ...
-1, -73, -2155, -58921, -1593811, ...
0, -927, -259701, -67045719, -17178209325, ...
4, -13969, -48496253, -152513227585, -476819162106101, ...
CROSSREFS
KEYWORD
sign,tabl
AUTHOR
Seiichi Manyama, Nov 09 2017
STATUS
approved