A183749 Number of (n+1) X (n+1) 0..3 arrays with equal numbers of 2 X 2 subblocks with sum over 6 and with sum under 6.

44, 35524, 347812760, 71621126116404, 240125119409366897752

Offset

1,1

Comments

Diagonal of A183756.

Links

Table of n, a(n) for n=1..5.

Example

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

Crossrefs

Sequence in context: A180842 A172753 A268425 * A119096 A131484 A365646

Adjacent sequences: A183746 A183747 A183748 * A183750 A183751 A183752

Keyword

nonn

Author

R. H. Hardin, Jan 06 2011

Status

approved