A235745 Number of (n+1)X(3+1) 0..3 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise

33640, 3493283, 351909466, 30537258362, 2563845268583, 197624940459675, 14776689666349119, 1049315480753471778, 72598830851735754112, 4858264843484096655111, 318359623119686331752911

Offset

1,1

Comments

Column 3 of A235747

Links

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

Example

Some solutions for n=1
..1..3..3..3....2..3..1..1....2..1..2..0....1..1..3..2....2..1..2..2
..0..0..0..3....0..0..2..3....1..0..1..0....2..0..1..2....0..0..3..0

Crossrefs

Sequence in context: A235663 A235428 A178280 * A235504 A355142 A297127

Adjacent sequences: A235742 A235743 A235744 * A235746 A235747 A235748

Keyword

nonn

Author

R. H. Hardin, Jan 15 2014

Status

approved