A236351 Number of (n+1)X(3+1) 0..2 arrays colored with the sum of the upper and lower median values of each 2X2 subblock.

2588, 27836, 266600, 2706844, 28890754, 301178180, 3117428148, 32329186968, 336865215998, 3500945078792, 36401829877770, 378300068653556, 3934037891653376, 40891368186374904, 425166200406048014

Offset

1,1

Comments

Column 3 of A236354

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=2
..2..1..2..2....2..0..0..2....1..0..0..1....1..2..2..2....1..0..0..1
..2..2..1..2....0..2..0..1....2..0..0..2....0..0..1..2....1..0..2..0
..1..1..0..2....2..2..1..2....1..2..2..2....0..1..0..1....1..1..0..0

Crossrefs

Sequence in context: A235950 A260840 A252310 * A250241 A252152 A035894

Adjacent sequences: A236348 A236349 A236350 * A236352 A236353 A236354

Keyword

nonn

Author

R. H. Hardin, Jan 23 2014

Status

approved