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, ...
3, 9, 33, 129, 513, ...
6, 90, 2220, 59178, 1594836, ...
13, 1162, 265132, 67180330, 17181660628, ...
24, 17435, 49163241, 152662629227, 476855156157129, ...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Seiichi Manyama, Nov 12 2017
STATUS
approved