A185493 Number of (n+1)X6 binary arrays with every 2X2 subblock sum equal to some horizontal or vertical neighbor 2X2 subblock sum

380, 20872, 559188, 17217132, 512228678, 15557758676, 468319269164, 14183811777874, 428304663870360, 12959263249428942, 391713900336756640, 11848007350522546976, 358238177899901779648, 10834146701839281093716

Offset

1,1

Comments

Column 5 of A185497

Links

R. H. Hardin, Table of n, a(n) for n = 1..45

Example

Some solutions for 4X6
..0..0..1..1..0..1....0..0..1..1..1..0....0..0..0..1..1..1....0..0..1..0..1..0
..0..1..1..0..0..0....1..0..1..0..1..1....0..1..0..0..0..0....0..1..0..1..1..1
..0..0..0..1..0..0....0..0..1..1..0..0....1..0..0..1..1..1....0..0..1..0..1..0
..1..0..1..0..0..0....1..1..0..1..1..1....0..1..1..0..0..0....0..1..1..1..0..1

Crossrefs

Sequence in context: A259520 A188307 A214145 * A023910 A035845 A028682

Adjacent sequences: A185490 A185491 A185492 * A185494 A185495 A185496

Keyword

nonn

Author

R. H. Hardin Jan 29 2011

Status

approved