A238042 - OEIS

A238042

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

6064, 61668, 621780, 6698520, 70363916, 735878108, 7744640808, 81468910084, 855621962264, 8992624643448, 94515770797736, 993327648282692, 10439451695451992, 109715564203291848, 1153058256519031332

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Column 4 of A238046

LINKS

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

EXAMPLE

Some solutions for n=2

..2..1..0..2..0....0..2..1..0..0....2..2..1..2..1....1..1..0..2..2

..0..2..1..2..0....0..1..0..1..0....1..2..1..0..0....2..0..2..0..1

..2..0..2..2..1....0..0..1..2..2....0..2..2..2..0....1..2..0..1..2

CROSSREFS

Sequence in context: A157267 A283932 A209552 * A251818 A241244 A241245

Adjacent sequences: A238039 A238040 A238041 * A238043 A238044 A238045

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 17 2014

STATUS

approved