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A236426 Number of (n+1)X(4+1) 0..2 arrays with the sum of each 2X2 subblock two extreme terms minus its two median terms lexicographically nondecreasing columnwise and nonincreasing rowwise 1
12373, 544380, 24143945, 987221751, 38520605664, 1385464957395, 46895371359150, 1481853762527918, 44250443243011112, 1248360171584853050, 33527011369578729307, 858472994569245436699, 21068648545060095499439 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A236427

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..29

EXAMPLE

Some solutions for n=1

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

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

CROSSREFS

Sequence in context: A096618 A238308 A179916 * A235841 A140938 A202563

Adjacent sequences:  A236423 A236424 A236425 * A236427 A236428 A236429

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 25 2014

STATUS

approved

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Last modified October 26 06:11 EDT 2020. Contains 338027 sequences. (Running on oeis4.)