A197408 Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,0,1,1,1 for x=0,1,2,3,4.

25, 2107, 34717, 1634731, 60334353, 2065093081, 77683473682, 2861267797023, 104224692369107, 3821001855576417, 140295906943370100, 5143358134125047217, 188539285472381998575, 6914680866283564114758, 253564501233044701809946

Offset

1,1

Comments

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

Column 7 of A197409

Links

R. H. Hardin, Table of n, a(n) for n = 1..51

Example

Some solutions containing all values 0 to 4 for n=4
..0..1..1..0..0..0..0....0..0..1..1..3..1..0....0..0..2..1..1..2..0
..0..1..4..1..1..1..1....2..1..1..0..1..2..0....1..1..1..0..0..1..2
..1..1..1..2..2..3..1....1..1..4..1..1..3..1....3..1..4..1..1..1..1
..1..0..0..0..1..1..0....0..0..1..2..0..1..2....1..0..1..3..1..0..0

Crossrefs

Sequence in context: A061843 A173948 A279276 * A197430 A195272 A266130

Adjacent sequences: A197405 A197406 A197407 * A197409 A197410 A197411

Keyword

nonn

Author

R. H. Hardin, Oct 14 2011

Status

approved