A251266 Number of (n+1)X(6+1) 0..1 arrays with no 2X2 subblock having x11-x00 less than x10-x01.

502, 3894, 31936, 279718, 2510004, 22806904, 208452452, 1910905110, 17543333688, 161181383956, 1481444894708, 13618944927408, 125212172603876, 1151259684237236, 10585524477077008, 97332520279830066, 894966894170134936

Offset: 1

Author

R. H. Hardin, Dec 01 2014

Keywords

• nonn

Comments

Column 6 of A251268

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210
• R. H. Hardin, Empirical recurrence of order 62

Formula

Empirical recurrence of order 62 (see link above)