login
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.
3
91, 1693, 42874, 1181303, 33787978, 986306398, 29202473260, 873679701315, 26348265181700, 799618906955872, 24390561043319626, 747104810403124190, 22965144760897452728, 708038892975800125716, 21885932074900784746650
OFFSET
1,1
COMMENTS
Column 4 of A184467.
LINKS
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
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 15 2011
STATUS
approved