A237680 Number of (n+1)X(3+1) 0..2 arrays colored with the upper median plus the lower median minus the minimum of every 2X2 subblock

2741, 35620, 449258, 5732688, 74265677, 959069036, 12309130146, 158172430796, 2039503492244, 26262766183068, 337868797917464, 4347180105311788, 55983639564753292, 720610706816450932, 9274854470107789578

Offset

1,1

Comments

Column 3 of A237683

Links

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

Example

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

Crossrefs

Sequence in context: A094401 A035774 A107570 * A262819 A094497 A202460

Adjacent sequences: A237677 A237678 A237679 * A237681 A237682 A237683

Keyword

nonn

Author

R. H. Hardin, Feb 11 2014

Status

approved