A196745 Number of n X 7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,3,1,0,4 for x=0,1,2,3,4.

1, 99, 4559, 134507, 4717086, 158910093, 5423213789, 184583551173, 6281590396734, 213663802431954, 7273588793555438, 247506982572487479, 8422846977433705331, 286636127515942129449, 9754487417323791315992

Offset

1,2

Comments

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

Column 7 of A196746.

Links

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

Example

Some solutions for n=4
..0..0..0..0..1..0..0....0..0..0..0..0..0..0....0..0..3..0..3..0..0
..0..0..3..0..3..0..0....0..3..0..0..3..1..0....0..0..0..0..0..1..0
..3..0..3..0..0..0..0....0..1..1..3..0..0..3....0..0..3..3..0..3..0
..0..0..0..0..3..0..0....0..0..0..0..0..0..0....0..3..0..0..3..0..0

Crossrefs

Cf. A196746.

Sequence in context: A157370 A163040 A133319 * A196903 A017815 A017762

Adjacent sequences: A196742 A196743 A196744 * A196746 A196747 A196748

Keyword

nonn

Author

R. H. Hardin, Oct 06 2011

Status

approved