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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.

A096653 Lower triangular matrix T, read by rows, such that the row sums of T^n form the (3n)-dimensional partition numbers.

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%I A096653 #3 Mar 30 2012 18:36:40
%S A096653 1,0,1,0,3,1,0,6,3,1,0,13,9,3,1,0,24,19,12,3,1,0,48,48,25,15,3,1,0,86,
%T A096653 84,84,31,18,3,1,0,160,228,99,135,37,21,3,1,0,282,129,721,57,204,43,
%U A096653 24,3,1,0,500,2521,-2267,2087,-93,294,49,27,3,1,0,859,-16291,29876,-13253,5229,-417,408,55,30,3,1,0,1479,199621,-317919
%N A096653 Lower triangular matrix T, read by rows, such that the row sums of T^n form the (3n)-dimensional partition numbers.
%C A096653 Row sums of T form A000293 (solid partitions); row sums of T^2 form A000416(6-D).
%F A096653 Matrix cube of triangle A096651.
%e A096653 Triangle T begins:
%e A096653 {1},
%e A096653 {0,1},
%e A096653 {0,3,1},
%e A096653 {0,6,3,1},
%e A096653 {0,13,9,3,1},
%e A096653 {0,24,19,12,3,1},
%e A096653 {0,48,48,25,15,3,1},
%e A096653 {0,86,84,84,31,18,3,1},
%e A096653 {0,160,228,99,135,37,21,3,1},
%e A096653 {0,282,129,721,57,204,43,24,3,1},
%e A096653 {0,500,2521,-2267,2087,-93,294,49,27,3,1},
%e A096653 {0,859,-16291,29876,-13253,5229,-417,408,55,30,3,1},
%e A096653 {0,1479,199621,-317919,165456,-46401,11539,-996,549,61,33,3,1},
%e A096653 {0,2485,-2547804,4150781,-2100853,627628,-126896,23006,-1926,720,67,36,3,1},...
%e A096653 Row sums are: {1,1,4,10,26,59,140,307,684,1464,3122,6500,...} (A000293).
%e A096653 T^2 begins:
%e A096653 {1},
%e A096653 {0,1},
%e A096653 {0,6,1},
%e A096653 {0,21,6,1},
%e A096653 {0,71,27,6,1},
%e A096653 {0,216,101,33,6,1},
%e A096653 {0,657,363,131,39,6,1},
%e A096653 {0,1907,1185,552,161,45,6,1},
%e A096653 {0,5507,3931,1824,789,191,51,6,1},
%e A096653 {0,15522,11574,7449,2520,1080,221,57,6,1},...
%e A096653 with row sums: {1,1,7,28,105,357,1197,3857,12300,38430,...} (A000416).
%Y A096653 Cf. A096651, A096652, A000293, A000416.
%K A096653 sign,tabl
%O A096653 0,5
%A A096653 _Paul D. Hanna_, Jul 06 2004