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A235529 Number of (n+1)X(3+1) 0..2 arrays with the sum of each 2X2 subblock two median terms lexicographically nondecreasing rowwise and columnwise 1
2996, 102687, 4295649, 140614400, 4492923265, 120808065816, 3063485786072, 69645586587955, 1495519651732182, 29857757996570399, 567731079489296912, 10249467332866019470, 177776286043094726447, 2965935579570089700509 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A235531

LINKS

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

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A178326 A063055 A235754 * A106766 A119892 A158861

Adjacent sequences:  A235526 A235527 A235528 * A235530 A235531 A235532

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 11 2014

STATUS

approved

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Last modified February 29 05:25 EST 2020. Contains 332353 sequences. (Running on oeis4.)