A295273 Number of nX6 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 1 or 4 1s.

44, 865, 19997, 449827, 10203847, 230659662, 5221177246, 118139247475, 2673342943199, 60493860184777, 1368887903616187, 30975935104352291, 700940389558441876, 15861259863124103232, 358917220084448007191

Offset: 1

Author

R. H. Hardin, Nov 19 2017

Keywords

• nonn

Comments

Column 6 of A295275.

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210
• R. H. Hardin, Empirical recurrence of order 78

Crossrefs

Cf. A295275.

Formula

Empirical recurrence of order 78 (see link above)