Search: id:A133566
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%I A133566
%S A133566 1,0,1,0,1,1,0,0,0,1,0,0,0,1,1,0,0,0,0,0,1,0,0,0,0,0,1,1,0,0,0,0,0,0,0,
%T A133566 1,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,1
%N A133566 An interpolation transform, (1,1,1,...) in the main diagonal and (0,1,
               0,1,...) in the subdiagonal.
%C A133566 Let the A133566 as a triangle = T. Then T * V, where V = any sequence 
               as a vector with offset 1; gives a new sequence S such that S(2n) 
               = V(2n) and S(2n-1) = T(n) + T(n-1). Example: T * [1,2,3...] = [1, 
               2, 5, 4, 9, 6, 13, 8, 17,...) = A114752. A133080 is identical to 
               A133566 except that the subdiagonal = (1,0,1,0,...). A133080 * [1,
               2,3,...] = A114753: (1, 3, 3, 7, 5, 11, 7, 15, 9, 19,...).
%C A133566 Triangle T(n,k), 0<=k<=n, read by rows given by [0,1,-1,0,0,0,0,0,0,...] 
               DELTA [1,0,-2,1,0,0,0,0,0,0,0,...] where DELTA is the operator defined 
               in A084938 . - Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Dec 15 
               2007
%F A133566 As an infinite lower triangular matrix, (1,1,1,...) in the main diagonal 
               and (0,1,0,1,...) in the subdiagonal.) Triangle; odd rows, (n-2) 
               zeros followed by 1, 1. Even rows, (n-1) zeros followed by 1.
%F A133566 Sum_{k, 0<=k<=n}T(n,k)=A040001(n). - Philippe DELEHAM (kolotoko(AT)wanadoo.fr), 
               Dec 15 2007
%e A133566 First few rows of the triangle are:
%e A133566 1;
%e A133566 0, 1;
%e A133566 0, 1, 1;
%e A133566 0, 0, 0, 1;
%e A133566 0, 0, 0, 1, 1;
%e A133566 0, 0, 0, 0, 0, 1;
%e A133566 ...
%Y A133566 Cf. A133080, A114752.
%Y A133566 Sequence in context: A102863 A131483 A077052 this_sequence A077051 A115955 
               A106344
%Y A133566 Adjacent sequences: A133563 A133564 A133565 this_sequence A133567 A133568 
               A133569
%K A133566 nonn,tabl
%O A133566 1,1
%A A133566 Gary W. Adamson (qntmpkt(AT)yahoo.com), Sep 16 2007

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