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A235841 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 rowwise and columnwise 1
12373, 919222, 84434218, 7084268884, 509718744920, 31142484762646, 1656595310876326, 77736219720516131, 3292922587031251015, 126923138135345038967, 4523584885336479266286, 149771727888161066846477 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A235842

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..26

EXAMPLE

Some solutions for n=1

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

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

CROSSREFS

Sequence in context: A238308 A179916 A236426 * A140938 A202563 A061731

Adjacent sequences:  A235838 A235839 A235840 * A235842 A235843 A235844

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 16 2014

STATUS

approved

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Last modified October 30 10:25 EDT 2020. Contains 338078 sequences. (Running on oeis4.)