A184612 Half the number of (n+1)X8 binary arrays with no 2X2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one

15842, 1107926, 78509868, 6057271712, 462355902596, 35064902406734, 2659360843218429, 201958235918095986, 15333630682922503829, 1164123481083707759494, 88379156849428630994503

Offset

1,1

Comments

Column 7 of A184614

Links

R. H. Hardin, Table of n, a(n) for n = 1..40

Example

Some solutions for 3X8
..0..0..0..0..0..0..1..1....0..0..0..0..0..1..1..0....0..0..0..0..0..0..1..0
..0..1..1..0..1..1..0..0....0..1..0..0..1..0..0..1....1..1..0..1..1..0..0..1
..1..0..0..1..0..0..0..1....1..0..0..1..0..1..1..0....0..1..0..0..0..1..1..1
...
...1..2..1..1..2..2..2.......1..1..0..1..2..2..2.......2..1..1..2..1..1..2...
...2..2..2..2..2..1..1.......2..1..1..2..2..2..2.......3..2..1..2..2..2..3...

Crossrefs

Sequence in context: A367231 A265669 A356866 * A277350 A101320 A031811

Adjacent sequences: A184609 A184610 A184611 * A184613 A184614 A184615

Keyword

nonn

Author

R. H. Hardin Jan 18 2011

Status

approved