A259249 Number of (n+1)X(7+1) 0..1 arrays with each 2X2 subblock having clockwise pattern 0000 0011 or 0111.

1353, 15613, 159168, 1803859, 18970267, 211569948, 2259371001, 24946035357, 268635598788, 2948447364239, 31900157480147, 348917447759080, 3785118935837593, 41318554169121573, 448913396152129472

Offset: 1

Author

R. H. Hardin, Jun 22 2015

Keywords

• nonn

Comments

Column 7 of A259250

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210
• R. H. Hardin, Empirical recurrence of order 54

Crossrefs

Cf. A259250

Formula

Empirical recurrence of order 54 (see link above)