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A237920 Number of (n+1)X(6+1) 0..3 arrays with the upper median plus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one 0
2591160, 115206520, 5873296416, 319272033708, 16925434187136, 916442021543680, 49330571235798640, 2672359389881231804, 144785715080142316784 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A237921

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

Some solutions for n=1

..0..0..1..1..2..2..1....0..0..1..0..2..1..2....0..0..2..3..1..0..3

..3..0..1..3..0..3..3....3..3..3..2..3..1..1....1..1..1..1..3..2..2

CROSSREFS

Sequence in context: A259563 A151938 A186049 * A317615 A250706 A269281

Adjacent sequences:  A237917 A237918 A237919 * A237921 A237922 A237923

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 15 2014

STATUS

approved

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Last modified August 12 20:01 EDT 2022. Contains 356077 sequences. (Running on oeis4.)