A196911 Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,1,2,0,4 for x=0,1,2,3,4

13, 487, 10970, 280860, 7352954, 200038888, 5388703976, 145478400315, 3933296800409, 106294282176389, 2872553552092524, 77641656013643280, 2098667174973445583, 56728541446185446120, 1533438828790467176239

Offset

1,1

Comments

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

Column 7 of A196912

Links

R. H. Hardin, Table of n, a(n) for n = 1..121

Example

Some solutions for n=4
..0..0..0..0..0..1..1....0..0..1..1..0..0..1....0..0..0..0..0..0..0
..0..1..1..0..0..0..0....0..0..0..0..2..2..1....0..0..0..1..1..2..2
..0..0..0..1..2..2..0....1..0..1..1..2..2..0....0..0..0..0..0..2..2
..1..1..0..1..2..2..0....1..0..0..0..1..1..0....0..1..1..0..1..1..0

Crossrefs

Sequence in context: A220560 A033983 A055412 * A197078 A116114 A281181

Adjacent sequences: A196908 A196909 A196910 * A196912 A196913 A196914

Keyword

nonn

Author

R. H. Hardin Oct 07 2011

Status

approved