cp's OEIS Frontend

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.

A165969 Triangle read by rows: T(n,m) = A094310(n,m)*A120070(n+1,m), 1 <= m <= n.

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%I A165969 #10 Jan 12 2019 20:45:04
%S A165969 3,16,5,90,36,14,576,252,128,54,4200,1920,1080,600,264,34560,16200,
%T A165969 9600,5940,3456,1560,317520,151200,92400,60480,39312,23520,10800,
%U A165969 3225600,1552320,967680,655200,451584,302400,184320,85680,35925120,17418240,11007360,7620480,5443200,3870720,2643840,1632960,766080
%N A165969 Triangle read by rows: T(n,m) = A094310(n,m)*A120070(n+1,m), 1 <= m <= n.
%C A165969 The second array mentioned in the comment in A129326.
%e A165969 Triangle begins
%e A165969         3;
%e A165969        16,       5;
%e A165969        90,      36,     14;
%e A165969       576,     252,    128,     54;
%e A165969      4200,    1920,   1080,    600,    264;
%e A165969     34560,   16200,   9600,   5940,   3456,   1560;
%e A165969    317520,  151200,  92400,  60480,  39312,  23520,  10800;
%e A165969   3225600, 1552320, 967680, 655200, 451584, 302400, 184320, 85680;
%p A165969 A120070 := proc(n, m) n^2-m^2 ; end proc:
%p A165969 A094310 := proc(n,m) n!/m ; end proc:
%p A165969 A165969 := proc(n,m) A094310(n,m)*A120070(n+1,m) ; end proc: # _R. J. Mathar_, Jan 23 2011
%Y A165969 Cf. A077012, A079210.
%K A165969 nonn,tabl,easy
%O A165969 1,1
%A A165969 _Paul Curtz_, Oct 02 2009