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A233602 T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with no increasing sequence of length 3 horizontally, vertically or antidiagonally downwards 16

%I #4 Dec 14 2013 06:16:42

%S 15272,341849,342185,7655432,20463326,7610545,171455430,1228836823,

%T 1210323458,169129037,3839022704,73856970690,193816724926,71466955645,

%U 3756984641,85958825311,4437742405449,31089670720384,30486088122553

%N T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with no increasing sequence of length 3 horizontally, vertically or antidiagonally downwards

%C Table starts

%C .........15272............341849...............7655432................171455430

%C ........342185..........20463326............1228836823..............73856970690

%C .......7610545........1210323458..........193816724926...........31089670720384

%C .....169129037.......71466955645........30486088122553........13036676136198570

%C ....3756984641.....4216843315070......4789333815748164......5457144376641532163

%C ...83451469774...248776920079071....752211767721347638...2283486525774040837846

%C .1853608731449.14676155317362609.118131715113190354345.955374780755516442029392

%H R. H. Hardin, <a href="/A233602/b233602.txt">Table of n, a(n) for n = 1..143</a>

%F Empirical for column k:

%F k=1: [linear recurrence of order 23]

%F Empirical for row n:

%F n=1: [linear recurrence of order 23]

%F n=2: [order 61] for n>62

%e Some solutions for n=1 k=4

%e ..0..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0

%e ..0..0..2..2..0..2....1..2..2..0..2..0....0..2..0..2..2..2....1..0..0..0..0..0

%e ..0..1..1..2..2..2....1..1..0..0..0..1....1..0..0..1..1..1....1..2..0..1..0..2

%K nonn,tabl

%O 1,1

%A _R. H. Hardin_, Dec 14 2013

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Last modified April 18 21:51 EDT 2024. Contains 371781 sequences. (Running on oeis4.)