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A235761 Number of (n+1)X(4+1) 0..1 arrays with the sum of each 2X2 subblock two median terms lexicographically nondecreasing columnwise and nonincreasing rowwise 1
378, 3900, 41446, 375746, 3328260, 26947867, 210973948, 1565770379, 11256123354, 78072050576, 527123759962, 3466598019110, 22301706547606, 140574140178572, 870358749670086, 5301475268558800, 31823194588016876, 188502025819240539 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A235765

LINKS

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

EXAMPLE

Some solutions for n=3

..0..0..1..1..1....1..1..1..1..1....1..0..0..0..0....0..1..1..1..0

..0..1..0..1..1....1..0..1..0..1....0..0..0..1..1....1..1..1..1..1

..0..0..0..1..1....0..1..0..1..1....1..0..0..0..0....0..1..1..1..1

..0..0..0..1..1....0..0..0..1..1....0..0..0..0..1....1..0..0..1..0

CROSSREFS

Sequence in context: A058041 A224337 A239174 * A154078 A047632 A033699

Adjacent sequences:  A235758 A235759 A235760 * A235762 A235763 A235764

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 15 2014

STATUS

approved

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Last modified December 3 00:59 EST 2021. Contains 349445 sequences. (Running on oeis4.)