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A233596 Number of (n+2)X(2+2) 0..2 arrays with no increasing sequence of length 3 horizontally, vertically or antidiagonally downwards 1

%I #4 Dec 14 2013 06:10:45

%S 341849,20463326,1210323458,71466955645,4216843315070,248776920079071,

%T 14676155317362609,865785087655346888,51074789385868502091,

%U 3013025156012753072147,177745594225262163998786

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

%C Column 2 of A233602

%H R. H. Hardin, <a href="/A233596/b233596.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=1

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 14 2013

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Last modified April 23 02:23 EDT 2024. Contains 371906 sequences. (Running on oeis4.)