A260839 Number of (n+2)X(6+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00010101.

1320, 1645, 3470, 6232, 8646, 19718, 37882, 58489, 116930, 248515, 412314, 751247, 1604892, 2935059, 5115588, 10451412, 20331520, 35935935, 69439734, 138338285, 252687084, 471920997, 934503484, 1761244126, 3253322750, 6325629935

Offset: 1

Author

R. H. Hardin, Aug 01 2015

Keywords

• nonn

Comments

Column 6 of A260841

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210
• R. H. Hardin, Empirical recurrence of order 92

Crossrefs

Cf. A260841

Formula

Empirical recurrence of order 92 (see link above)