A232952 Number of nX5 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally, diagonally or antidiagonally, and top left element zero.

81, 4629, 283131, 17429409, 1074244299, 66226131273, 4082986991091, 251727862281441, 15519780149309307, 956841601733733945, 58992197961597648195, 3637048689898637056977, 224235130894279830031179

Offset: 1

Author

R. H. Hardin, Dec 02 2013

Keywords

• nonn

Comments

Column 5 of A232955

Examples

			Some solutions for n=2
..0..0..2..2..0....0..1..3..1..3....0..2..0..2..0....0..0..0..0..2
..1..0..2..2..0....0..1..3..3..1....0..1..3..2..2....2..0..1..0..2
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210

Formula

Empirical: a(n) = 78*a(n-1) -1043*a(n-2) +2012*a(n-3) +10236*a(n-4) -39726*a(n-5) +41724*a(n-6) -6408*a(n-7) -8680*a(n-8) +2592*a(n-9) -96*a(n-10)