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A235750 Number of (n+1)X(2+1) 0..3 arrays with the sum of each 2X2 subblock two median terms lexicographically nondecreasing columnwise and nonincreasing rowwise 1
2648, 77708, 2349533, 57181902, 1348418217, 28136789021, 560792477177, 10364143382452, 183337846709513, 3080219140780805, 49849184508693938, 776698260928729874, 11733357139416831031, 172123410005801315568 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A235752

LINKS

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

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A254983 A235676 A235446 * A235813 A225023 A251162

Adjacent sequences:  A235747 A235748 A235749 * A235751 A235752 A235753

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 15 2014

STATUS

approved

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Last modified July 24 08:43 EDT 2021. Contains 346273 sequences. (Running on oeis4.)