A183742 Number of (n+1) X 4 0..2 arrays with equal numbers of 2 X 2 subblocks with sum over 4 and with sum under 4.

1041, 55857, 3631179, 263234281, 19216153673, 1426003404195, 107098914678533, 8126407481779133, 621298001439642413, 47785646470869878477, 3693151367056391264855, 286578277345141339371139

Offset

1,1

Comments

Column 3 of A183748.

Links

R. H. Hardin, Table of n, a(n) for n = 1..116

Example

Some solutions for 3 X 4:
..1..2..0..1....2..0..2..2....1..2..0..2....0..0..1..2....1..2..2..2
..0..2..0..0....0..0..2..1....0..0..2..1....0..2..1..0....1..0..1..1
..2..0..2..2....0..1..1..1....1..0..2..0....1..1..2..1....0..0..1..1
...
...P..E..M.......M..E..P.......M..E..P.......M..E..E.......E..P..P...
...E..E..E.......M..E..P.......M..E..P.......E..P..E.......M..M..E...

Crossrefs

Sequence in context: A210259 A233854 A168412 * A252618 A231112 A213811

Adjacent sequences: A183739 A183740 A183741 * A183743 A183744 A183745

Keyword

nonn

Author

R. H. Hardin, Jan 06 2011

Status

approved