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A154388 Triangle T(n,k), 0<=k<=n, read by rows given by [0,1,-1,0,0,0,0,0,0,0,...] DELTA [1,-1,-1,1,0,0,0,0,0,0,0,...] where DELTA is the operator defined in A084938. 1

%I #10 Jan 25 2020 00:53:24

%S 1,0,1,0,1,0,0,0,0,1,0,0,0,1,0,0,0,0,0,0,1,0,0,0,0,0,1,0,0,0,0,0,0,0,

%T 0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,1,0,0,0,

%U 0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1

%N Triangle T(n,k), 0<=k<=n, read by rows given by [0,1,-1,0,0,0,0,0,0,0,...] DELTA [1,-1,-1,1,0,0,0,0,0,0,0,...] where DELTA is the operator defined in A084938.

%F Sum_{k=0..n} T(n,k)*x^(n-k) = A135528(n+1), A000012(n), A040001(n), A153284(n+1) for x = 0,1,2,3 respectively.

%F G.f.: (1+y*x+(y-y^2)*x^2)/(1-y^2*x^2). - _Philippe Deléham_, Dec 17 2011

%F Sum_{k=0..n} T(n,k)*x^k = A000007(n), A000012(n), A158302(n) for x = 0, 1, 2 respectively. - _Philippe Deléham_, Dec 17 2011

%e Triangle begins:

%e 1;

%e 0, 1;

%e 0, 1, 0;

%e 0, 0, 0, 1;

%e 0, 0, 0, 1, 0;

%e 0, 0, 0, 0, 0, 1; ...

%K nonn,tabl

%O 0,1

%A _Philippe Deléham_, Jan 08 2009

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Last modified April 25 10:22 EDT 2024. Contains 371967 sequences. (Running on oeis4.)