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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A160756 Triangle read by rows, infinite lower triangular Toeplitz matrix with A078008 in every column convolved with A001333.

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%I A160756 #3 Mar 30 2012 17:25:34
%S A160756 1,0,1,2,0,1,2,2,0,3,6,2,2,0,7,10,6,2,6,0,17,22,10,6,6,14,0,41,42,22,
%T A160756 10,18,14,34,0,99,86,42,22,30,42,34,82,0,239,170,86,42,66,70,102,82,
%U A160756 198,0,577
%N A160756 Triangle read by rows, infinite lower triangular Toeplitz matrix with A078008 in every column convolved with A001333.
%C A160756 Row sums = A001333: (1, 1, 3, 7, 17, 41,...). Sum of n-th row terms = rightmost term of next row.
%F A160756 Let M = an infinite lower triangular Toeplitz matrix with A078008 (1, 0, 2, 2, 6, 10, 22, 42, 86, 170,...). Let Q = the eigensequence of that triangle prefaced with a 1: (1, 1, 1, 3, 7, 17,...) where A001333 = (1, 1, 3, 7, 17,...). The triangle = M * Q.
%e A160756 First few rows of the triangle =
%e A160756 1;
%e A160756 0, 1;
%e A160756 2, 0, 1;
%e A160756 2, 2, 0, 3;
%e A160756 6, 2, 2, 0, 7;
%e A160756 10, 6, 2, 6, 0, 17;
%e A160756 22, 10, 6, 6, 14, 0, 41;
%e A160756 42, 22, 10, 18, 14, 34, 0, 99;
%e A160756 86, 42, 22, 30, 42, 34, 82, 0, 239;
%e A160756 170, 86, 42, 66, 70, 102, 82, 198, 0, 577;
%e A160756 ...
%e A160756 Example: row 4 = (6, 2, 2, 0, 7) = (6, 2, 2, 0, 1) * (1, 1, 1, 3, 7).
%Y A160756 Cf. A078008, A001333
%K A160756 nonn,tabl
%O A160756 0,4
%A A160756 _Gary W. Adamson_, May 25 2009