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A283272
Square array A(n,k), n>=0, k>=0, read by antidiagonals, where column k is expansion of Product_{j>=1} (1-x^j)^(j^k) in power of x.
15
1, 1, -1, 1, -1, -1, 1, -1, -2, 0, 1, -1, -4, -1, 0, 1, -1, -8, -5, 0, 1, 1, -1, -16, -19, -1, 4, 0, 1, -1, -32, -65, -9, 21, 4, 1, 1, -1, -64, -211, -55, 127, 49, 7, 0, 1, -1, -128, -665, -285, 807, 500, 81, 3, 0, 1, -1, -256, -2059, -1351, 5179, 4809, 1038, 45
OFFSET
0,9
LINKS
FORMULA
G.f. of column k: Product_{j>=1} (1-x^j)^(j^k).
EXAMPLE
Square array begins:
1, 1, 1, 1, 1, 1, ...
-1, -1, -1, -1, -1, -1, ...
-1, -2, -4, -8, -16, -32, ...
0, -1, -5, -19, -65, -211, ...
0, 0, -1, -9, -55, -285, ...
1, 4, 21, 127, 807, 5179, ...
CROSSREFS
Row k=5 gives A281581.
Main diagonal gives A283333.
Cf. A144048.
Sequence in context: A110298 A362379 A144740 * A292166 A282192 A049501
KEYWORD
sign,tabl
AUTHOR
Seiichi Manyama, Mar 04 2017
STATUS
approved