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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 1
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

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Last modified June 16 21:20 EDT 2019. Contains 324155 sequences. (Running on oeis4.)