A185496 Number of (n+1)X9 binary arrays with every 2X2 subblock sum equal to some horizontal or vertical neighbor 2X2 subblock sum

11828, 3480976, 504455124, 85864759616, 14183811777874, 2389300393136984

Offset

1,1

Comments

Column 8 of A185497

Links

Table of n, a(n) for n=1..6.

Example

Some solutions for 4X9
..0..0..0..1..0..0..0..0..1....0..0..0..0..0..0..0..1..0
..0..0..0..0..0..1..0..1..0....0..0..0..1..1..0..1..1..0
..0..0..0..0..0..0..1..0..1....0..0..0..0..0..0..0..1..0
..0..0..0..0..0..0..1..1..1....0..0..0..0..0..1..1..0..1

Crossrefs

Sequence in context: A294661 A347144 A188310 * A249842 A251788 A194776

Adjacent sequences: A185493 A185494 A185495 * A185497 A185498 A185499

Keyword

nonn

Author

R. H. Hardin Jan 29 2011

Status

approved