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A237901 Number of (n+1)X(3+1) 0..3 arrays with the maximum plus the upper median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one 1
12441, 265306, 5825366, 130240640, 2894506130, 64281925312, 1428716811643, 31771479675504, 706435639166636, 15702067218875532, 349084196018350256, 7760362296695540800, 172539246416718638096, 3835413694548281288228 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A237904

LINKS

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

EXAMPLE

Some solutions for n=1

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

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

CROSSREFS

Sequence in context: A068676 A252613 A221016 * A234127 A272132 A206664

Adjacent sequences:  A237898 A237899 A237900 * A237902 A237903 A237904

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 15 2014

STATUS

approved

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Last modified October 3 18:24 EDT 2022. Contains 357237 sequences. (Running on oeis4.)