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A237725 Number of (n+1)X(3+1) 0..2 arrays with the maximum plus the upper median minus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one 1
1510, 13496, 122940, 1145290, 10499035, 95855164, 880137130, 8127250116, 74629273042, 683964254956, 6286003833036, 57856832489276, 531534461181318, 4878726987367352, 44841216521683074, 412241976376016092 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A237730

LINKS

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

R. H. Hardin, Empirical recurrence of order 88

FORMULA

Empirical recurrence of order 88 (see link above)

EXAMPLE

Some solutions for n=3

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

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

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

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

CROSSREFS

Sequence in context: A237319 A281569 A252553 * A200915 A298223 A060676

Adjacent sequences:  A237722 A237723 A237724 * A237726 A237727 A237728

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 12 2014

STATUS

approved

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Last modified December 6 18:16 EST 2021. Contains 349567 sequences. (Running on oeis4.)