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A237933 Number of (n+1)X(3+1) 0..3 arrays with the upper median plus the lower median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one 1
11701, 228866, 4554824, 94068938, 1903243716, 38477471800, 782578367787, 16010421948796, 325182956026994, 6598288132312864, 134297532801921910, 2737952835801723408, 55665392270619900732, 1131238334494469739760 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A237936

LINKS

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

EXAMPLE

Some solutions for n=1

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

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

CROSSREFS

Sequence in context: A031631 A250923 A015630 * A251347 A234863 A250695

Adjacent sequences:  A237930 A237931 A237932 * A237934 A237935 A237936

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 16 2014

STATUS

approved

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Last modified October 26 11:16 EDT 2020. Contains 338027 sequences. (Running on oeis4.)