A208266 Number of nX5 0..1 arrays with new values 0..1 introduced in row major order and no element equal to more than two of its immediate leftward or upward or left-upward diagonal neighbors.

16, 317, 6631, 137845, 2867739, 59655167, 1240971177, 25815151595, 537016650729, 11171225344081, 232388094425359, 4834225856311743, 100563411775559793, 2091958482792842737, 43517718984137019457, 905272203611654999429

Offset: 1

Author

R. H. Hardin Feb 24 2012

Keywords

• nonn

Comments

Column 5 of A208269

Examples

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

Links

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

Formula

Empirical: a(n) = 21*a(n-1) +9*a(n-2) -278*a(n-3) +73*a(n-4) +790*a(n-5) -662*a(n-6) +29*a(n-7) +69*a(n-8) -10*a(n-9)