A184462 Half the number of (n+1) X 5 binary arrays with equal numbers of majority one 2 X 2 subblocks and majority zero 2 X 2 subblocks.

91, 1693, 42874, 1181303, 33787978, 986306398, 29202473260, 873679701315, 26348265181700, 799618906955872, 24390561043319626, 747104810403124190, 22965144760897452728, 708038892975800125716, 21885932074900784746650

Offset

1,1

Comments

Column 4 of A184467.

Links

R. H. Hardin, Table of n, a(n) for n = 1..187

Example

Some solutions for 3 X 5:
..0..1..0..0..0....0..1..1..0..0....0..0..0..0..0....0..0..0..1..0
..0..1..1..0..1....1..1..0..1..0....1..0..1..1..0....0..0..1..1..1
..0..1..1..0..1....0..0..0..1..0....1..1..1..0..1....0..0..0..1..1
...
...E..P..M..M.......P..P..E..M.......M..M..E..M.......M..M..P..P...
...E..P..E..E.......E..M..E..E.......P..P..P..E.......M..M..P..P...

Crossrefs

Sequence in context: A140667 A221939 A254611 * A229518 A118706 A119150

Adjacent sequences: A184459 A184460 A184461 * A184463 A184464 A184465

Keyword

nonn

Author

R. H. Hardin, Jan 15 2011

Status

approved