A259242 Number of (n+1)X(n+1) 0..1 arrays with each 2X2 subblock having clockwise pattern 0000 0011 or 0111.

9, 65, 720, 14425, 451481, 25462352, 2259371001, 359730429763, 90571705672192, 40745743533702439, 29115984372311031043, 37023356202692415717856, 75090733417483065667600023, 269938147719275944289836747059

Offset: 1

Author

R. H. Hardin, Jun 22 2015

Keywords

• nonn

Comments

Diagonal of A259250

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..15

Crossrefs

Cf. A259250