A186616 Number of (n+5)X11 binary arrays with every 6X6 subblock commuting with each horizontal and vertical neighbor 6X6 subblock.

15228305, 451621, 614995, 1478651, 3608091, 5490491, 6009659, 6088635, 6098495, 6108363, 6118259, 6128419, 6141303, 6166351, 6262063, 6714603, 8035411, 11072195, 15797367, 21906448, 28096053, 34652354, 42086819, 51247420, 62109293

Offset

1,1

Comments

Column 6 of A186619

Links

R. H. Hardin, Table of n, a(n) for n = 1..41

Formula

Empirical: a(n)=a(n-1)+a(n-4)-a(n-5)+a(n-6)-a(n-7)-a(n-10)+a(n-11)+a(n-12)-a(n-16) for n>23

Example

Some solutions for 7X11
..0..0..0..0..0..0..0..0..0..1..1....0..0..0..0..0..0..0..0..0..1..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..0..0..0....0..0..0..0..0..0..0..0..0..0..0
..0..0..0..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....1..0..0..0..0..0..0..0..0..0..1
..1..1..0..0..0..0..0..0..0..0..0....0..0..1..0..0..0..0..0..0..0..0
..1..0..1..0..0..0..0..0..0..0..0....1..0..1..0..0..0..0..0..0..0..0

Crossrefs

Sequence in context: A322681 A269118 A234480 * A128480 A273355 A207797

Adjacent sequences: A186613 A186614 A186615 * A186617 A186618 A186619

Keyword

nonn

Author

R. H. Hardin, Feb 24 2011

Status

approved