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A236425 Number of (n+1)X(3+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
2581, 60193, 1290539, 24143945, 414682711, 6480932348, 94263772244, 1278900927369, 16379992931866, 198820398501064, 2304672961745261, 25596758706053645, 273909225712661149, 2831115529220189307 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A236427

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..184

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A252159 A252167 A252160 * A235840 A200711 A235950

Adjacent sequences:  A236422 A236423 A236424 * A236426 A236427 A236428

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 25 2014

STATUS

approved

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Last modified July 2 18:27 EDT 2022. Contains 355029 sequences. (Running on oeis4.)