

A196640


Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 1,4,2,0,3 for x=0,1,2,3,4


1



1, 161, 2716, 61040, 1359317, 30213746, 665532327, 14699136810, 324580294214, 7174373488843, 158475010595627, 3501133164138965, 77351575703021875, 1708953141696773382, 37756465985372614724, 834167580535337854517
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OFFSET

1,2


COMMENTS

Every 0 is next to 0 1's, every 1 is next to 1 4's, every 2 is next to 2 2's, every 3 is next to 3 0's, every 4 is next to 4 3's
Column 7 of A196641


LINKS

R. H. Hardin, Table of n, a(n) for n = 1..200


EXAMPLE

Some solutions for n=4
..0..0..0..3..0..0..0....0..0..3..0..3..0..0....0..0..0..3..0..0..0
..2..2..0..0..0..0..3....3..0..0..0..0..3..0....3..0..0..0..0..0..0
..2..2..0..3..2..2..0....0..0..2..2..0..2..2....0..0..0..0..3..3..0
..0..0..3..0..2..2..0....0..0..2..2..0..2..2....0..3..0..0..0..0..0


CROSSREFS

Sequence in context: A200869 A200883 A196635 * A232072 A278205 A197089
Adjacent sequences: A196637 A196638 A196639 * A196641 A196642 A196643


KEYWORD

nonn


AUTHOR

R. H. Hardin Oct 04 2011


STATUS

approved



