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A291701 Square array A(n,k), n>=0, k>=0, read by antidiagonals, where column k is the expansion of k-th power of continued fraction 1 - x/(1 - x^2/(1 - x^3/(1 - x^4/(1 - x^5/(1 - ...))))). 1

%I #12 Aug 30 2017 09:36:46

%S 1,1,0,1,-1,0,1,-2,0,0,1,-3,1,-1,0,1,-4,3,-2,0,0,1,-5,6,-4,2,-1,0,1,

%T -6,10,-8,6,-2,-1,0,1,-7,15,-15,13,-6,1,-1,0,1,-8,21,-26,25,-16,6,0,

%U -2,0,1,-9,28,-42,45,-36,18,-3,0,-2,0,1,-10,36,-64,77,-72

%N Square array A(n,k), n>=0, k>=0, read by antidiagonals, where column k is the expansion of k-th power of continued fraction 1 - x/(1 - x^2/(1 - x^3/(1 - x^4/(1 - x^5/(1 - ...))))).

%F G.f. of column k: (1 - x/(1 - x^2/(1 - x^3/(1 - x^4/(1 - x^5/(1 - ...))))))^k, a continued fraction.

%e Square array begins:

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

%e 0, -1, -2, -3, -4, ...

%e 0, 0, 1, 3, 6, ...

%e 0, -1, -2, -4, -8, ...

%e 0, 0, 2, 6, 13, ...

%Y Columns k=0..1 give A000007, A291148.

%Y Rows n=0..1 give A000012, A001489.

%Y Main diagonal gives A291702.

%Y Cf. A291652.

%K sign,tabl

%O 0,8

%A _Seiichi Manyama_, Aug 30 2017

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Last modified April 25 03:15 EDT 2024. Contains 371964 sequences. (Running on oeis4.)