A236993 Number of (n+1)X(4+1) 0..2 arrays with the maximum plus the lower median minus the upper median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one

7200, 104976, 1513728, 23825664, 363916800, 5454273024, 80675315712, 1304215105536, 20389194547200, 312112856088576, 4707004466331648, 77333727580913664, 1227558957731020800, 19065730298005684224

Offset

1,1

Comments

Column 4 of A236997

Links

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

Formula

Empirical: a(n) = 158112*a(n-4) -7941224448*a(n-8) +124128835928064*a(n-12)

Example

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

Crossrefs

Sequence in context: A035906 A190114 A239566 * A218513 A181259 A250054

Adjacent sequences: A236990 A236991 A236992 * A236994 A236995 A236996

Keyword

nonn

Author

R. H. Hardin, Feb 02 2014

Status

approved