A236010 Number of (n+1)X(n+1) 0..2 arrays colored with the sum of the maximum and minimum values of each 2X2 subblock

81, 1126, 13750, 95848, 805458, 5805712, 46936958, 297400544, 2301395022, 14676949336, 112821800002, 703842426432, 5358265271090, 33699329986640, 255391459490526, 1606272713154432

Offset

1,1

Comments

Diagonal of A236018

Links

Table of n, a(n) for n=1..16.

Example

Some solutions for n=4
..0..2..1..1..2....1..1..1..2..2....2..1..1..1..2....1..1..2..0..1
..0..1..1..1..2....0..1..1..1..0....0..0..1..1..2....1..1..1..0..0
..1..1..1..0..1....2..2..1..1..0....0..1..2..1..0....0..1..1..1..2
..1..1..2..1..0....2..1..0..1..2....2..2..1..0..1....2..2..1..1..2
..1..0..1..2..0....2..0..1..2..1....2..2..0..0..2....1..1..0..1..0

Crossrefs

Sequence in context: A236781 A237059 A374144 * A230677 A231994 A236790

Adjacent sequences: A236007 A236008 A236009 * A236011 A236012 A236013

Keyword

nonn

Author

R. H. Hardin, Jan 18 2014

Status

approved