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A201726 Number of nX5 0..4 arrays with rows and columns lexicographically nondecreasing and no element equal to the number of horizontal and vertical neighbors equal to itself 1

%I #5 Mar 31 2012 12:36:45

%S 56,16493,9603489,4720850001,1692459595971,463016032498283,

%T 100953294298736546,18122671914754530341,2749005920875643617934,

%U 359691065136570782416660,41268528292416431754552427

%N Number of nX5 0..4 arrays with rows and columns lexicographically nondecreasing and no element equal to the number of horizontal and vertical neighbors equal to itself

%C Column 5 of A201729

%H R. H. Hardin, <a href="/A201726/b201726.txt">Table of n, a(n) for n = 1..21</a>

%e Some solutions for n=2

%e ..0..0..0..1..4....0..0..1..3..3....1..2..3..4..4....0..1..2..3..4

%e ..2..2..3..4..1....0..0..4..2..3....4..1..3..4..4....0..3..3..3..1

%K nonn

%O 1,1

%A _R. H. Hardin_ Dec 04 2011

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Last modified July 19 03:15 EDT 2024. Contains 374388 sequences. (Running on oeis4.)