A269213 Number of nX7 0..3 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling three exactly once.

5832, 2546304, 1012764384, 354189986208, 116322554833728, 36713945487331392, 11273191243423937904, 3392211859561264876416, 1005065652737890110097824, 294164506851983123928014976, 85246917739611183231260455872

Offset: 1

Author

R. H. Hardin, Feb 20 2016

Keywords

• nonn

Comments

Column 7 of A269214.

Examples

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

Links

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

Crossrefs

Cf. A269214.