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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

%I #39 Mar 17 2017 12:32:04

%S 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,

%T 4,0,1,-1,-32,-65,-9,21,4,1,1,-1,-64,-211,-55,127,49,7,0,1,-1,-128,

%U -665,-285,807,500,81,3,0,1,-1,-256,-2059,-1351,5179,4809,1038,45

%N 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.

%H Seiichi Manyama, <a href="/A283272/b283272.txt">Antidiagonals n = 0..139, flattened</a>

%F G.f. of column k: Product_{j>=1} (1-x^j)^(j^k).

%e Square array begins:

%e 1, 1, 1, 1, 1, 1, ...

%e -1, -1, -1, -1, -1, -1, ...

%e -1, -2, -4, -8, -16, -32, ...

%e 0, -1, -5, -19, -65, -211, ...

%e 0, 0, -1, -9, -55, -285, ...

%e 1, 4, 21, 127, 807, 5179, ...

%Y Columns k=0-9 give A010815, A073592, A283263, A283264, A283271, A283336, A283337, A283338, A283339, A283340.

%Y Row k=5 gives A281581.

%Y Main diagonal gives A283333.

%Y Cf. A144048.

%K sign,tabl

%O 0,9

%A _Seiichi Manyama_, Mar 04 2017

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Last modified April 24 00:30 EDT 2024. Contains 371917 sequences. (Running on oeis4.)