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A235813 Number of (n+1)X(2+1) 0..3 arrays with the sum of each 2X2 subblock two median terms lexicographically nondecreasing rowwise and columnwise 1
2648, 84300, 2904651, 78133908, 2024258650, 45232185179, 960244682353, 18629377159706, 344562315553883, 6003667066393097, 100443885749557587, 1610133435482186036, 24960770149456460632, 374598638074715718092 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A235815

LINKS

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

EXAMPLE

Some solutions for n=2

..0..0..1....3..0..1....0..1..0....2..3..3....1..1..0....0..1..3....0..3..0

..1..1..2....1..0..2....1..0..1....1..1..1....0..3..2....0..1..2....1..1..1

..3..3..1....0..1..2....2..3..2....3..3..1....3..0..3....2..1..1....0..2..1

CROSSREFS

Sequence in context: A235676 A235446 A235750 * A225023 A251162 A217440

Adjacent sequences:  A235810 A235811 A235812 * A235814 A235815 A235816

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 16 2014

STATUS

approved

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Last modified July 24 20:26 EDT 2021. Contains 346273 sequences. (Running on oeis4.)