A183743 Number of (n+1) X 5 0..2 arrays with equal numbers of 2 X 2 subblocks with sum over 4 and with sum under 4.

10231, 1389521, 263234281, 55212617129, 12024860660055, 2669694620697299, 600788747889666009, 136582348832416596017, 31294543292138683447483, 7214884502508988515767997, 1671725517531838676446355621

Offset

1,1

Comments

Column 4 of A183748.

Links

R. H. Hardin, Table of n, a(n) for n = 1..47

Example

Some solutions for 3 X 5:
..2..0..2..0..1....0..0..2..1..2....2..0..1..2..2....1..0..1..2..2
..0..0..2..1..0....1..0..1..2..2....0..0..1..0..1....0..0..1..2..1
..2..2..0..2..1....2..0..2..2..0....1..2..2..2..1....2..0..0..2..0
...
...M..E..P..M.......M..M..P..P.......M..M..E..P.......M..M..P..P...
...E..E..P..E.......M..M..P..P.......M..P..P..E.......M..M..P..P...

Crossrefs

Cf. A183748.

Sequence in context: A100968 A203056 A252330 * A236743 A031987 A235693

Adjacent sequences: A183740 A183741 A183742 * A183744 A183745 A183746

Keyword

nonn

Author

R. H. Hardin, Jan 06 2011

Status

approved