A196652 - OEIS

A196652

Number of n X 7 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 3,4,0,2,1 for x=0,1,2,3,4.

13, 275, 2178, 37661, 689313, 10183698, 163282859, 2644969245, 42258577643, 676570815905, 10841400740070, 173671897740728, 2782146287996664, 44567043932430607, 713930349360876103, 11436736386929595699, 183208640605579226081, 2934873277198179205335, 47014627665357301000081

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OFFSET

1,1

COMMENTS

Every 0 is next to 0 3's, every 1 is next to 1 4's, every 2 is next to 2 0's, every 3 is next to 3 2's, every 4 is next to 4 1's

LINKS

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

EXAMPLE

Some solutions for n=4:

..0..2..2..0..2..0..2....0..0..1..0..0..0..2....0..0..0..0..2..0..0

..0..0..0..2..2..0..0....0..1..4..1..2..0..0....0..0..0..2..1..2..0

..0..0..0..2..0..2..2....0..2..1..0..2..0..0....2..2..0..1..4..1..0

..0..0..0..2..0..2..0....2..0..0..2..3..2..0....0..2..0..0..1..0..2

CROSSREFS

Column 7 of A196653.

Sequence in context: A001658 A034911 A385668 * A197455 A196342 A196321

Adjacent sequences: A196649 A196650 A196651 * A196653 A196654 A196655

KEYWORD

nonn

AUTHOR

R. H. Hardin, Oct 04 2011

STATUS

approved