A237077 Number of (n+1)X(1+1) 0..2 arrays colored with the maximum plus the minimum minus the upper median minus the lower median of every 2X2 subblock

81, 484, 2928, 17644, 106528, 641736, 3871696, 23356112, 140860224, 849369952, 5123163584, 30900608576, 186358734592, 1123916940160, 6778707349760, 40883900374784, 246573431346176, 1487114080196096, 8969081447668736

Offset

1,1

Comments

Column 1 of A237082

Links

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

Formula

Empirical: a(n) = 76*a(n-3) +544*a(n-4) +1272*a(n-5) +3512*a(n-6) +3568*a(n-7) -2944*a(n-8) -4864*a(n-9) -6144*a(n-10)

Example

Some solutions for n=5
..1..1....2..1....0..2....1..1....0..2....2..1....0..1....2..0....0..1....0..0
..2..0....1..1....1..1....0..2....2..2....2..2....0..1....2..0....0..0....0..2
..0..1....0..2....2..1....2..2....1..1....1..1....2..0....0..1....2..0....2..0
..0..1....0..1....0..1....0..1....1..2....2..1....2..0....1..1....1..2....1..0
..2..0....1..2....0..0....2..0....0..2....1..2....2..2....2..2....1..0....1..1
..0..2....0..2....0..0....2..1....2..0....0..2....1..1....2..1....2..2....2..0

Crossrefs

Sequence in context: A236651 A295018 A250613 * A236646 A205246 A205239

Adjacent sequences: A237074 A237075 A237076 * A237078 A237079 A237080

Keyword

nonn

Author

R. H. Hardin, Feb 03 2014

Status

approved