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.

A269336 T(n,k)=Number of nXk arrays containing k copies of 0..n-1 avoiding the pattern equal-up in every row and column.

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%I A269336 #6 Aug 12 2016 06:55:35
%S A269336 1,1,2,1,6,6,1,14,74,24,1,34,852,1880,120,1,78,10210,152922,80316,720,
%T A269336 1,178,124466,13745475,62038644,5141864,5040,1,398,1539739,1301306034,
%U A269336 55575194220,47286888510,458608016,40320,1,882,19271229,128342085219
%N A269336 T(n,k)=Number of nXk arrays containing k copies of 0..n-1 avoiding the pattern equal-up in every row and column.
%C A269336 Table starts
%C A269336 .....1.........1...........1...........1..............1............1........1
%C A269336 .....2.........6..........14..........34.............78..........178......398
%C A269336 .....6........74.........852.......10210.........124466......1539739.19271229
%C A269336 ....24......1880......152922....13745475.....1301306034.128342085219
%C A269336 ...120.....80316....62038644.55575194220.54180777470296
%C A269336 ...720...5141864.47286888510
%C A269336 ..5040.458608016
%C A269336 .40320
%H A269336 R. H. Hardin, <a href="/A269336/b269336.txt">Table of n, a(n) for n = 1..41</a>
%e A269336 Some solutions for n=3 k=4
%e A269336 ..1..2..0..0. .1..2..1..2. .0..1..2..1. .2..1..0..0. .1..2..1..2
%e A269336 ..0..1..2..1. .0..2..0..0. .0..2..1..0. .2..0..1..2. .0..2..0..1
%e A269336 ..1..2..2..0. .2..0..1..1. .0..2..2..1. .1..0..1..2. .0..1..2..0
%Y A269336 Column 1 is A000142.
%Y A269336 Row 2 is A059570(n+1).
%K A269336 nonn,tabl
%O A269336 1,3
%A A269336 _R. H. Hardin_, Feb 24 2016