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

2648, 77708, 2349533, 57181902, 1348418217, 28136789021, 560792477177, 10364143382452, 183337846709513, 3080219140780805, 49849184508693938, 776698260928729874, 11733357139416831031, 172123410005801315568

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 A377759 A225023

Adjacent sequences: A235747 A235748 A235749 * A235751 A235752 A235753

Keyword

nonn

Author

R. H. Hardin, Jan 15 2014

Status

approved