A237245 Number of (n+1) X (4+1) 0..2 arrays with the maximum plus the upper median minus the lower median minus the minimum of every 2 X 2 subblock differing from its horizontal and vertical neighbors by exactly one.

6496, 78420, 974864, 12987512, 163330432, 2059810392, 26060799904, 355097523776, 4532945330880, 57916057781984, 741681895667456, 10266004050839616, 132424817292716928, 1707035661218555456

Offset

1,1

Comments

Column 4 of A237249.

Links

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

Formula

Empirical: a(n) = 80692*a(n-4) -2102571080*a(n-8) +17424111539232*a(n-12) -28895609836800*a(n-16) for n>20.

Example

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

Crossrefs

Cf. A237249.

Sequence in context: A104242 A031842 A028544 * A049529 A284102 A338951

Adjacent sequences: A237242 A237243 A237244 * A237246 A237247 A237248

Keyword

nonn

Author

R. H. Hardin, Feb 05 2014

Status

approved