A235663 Number of (n+1)X(3+1) 0..3 arrays with the difference between each 2X2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise

33610, 3405756, 314516602, 25779181084, 1970890033598, 141161012840294, 9652126935575732, 634521352294571412, 40476229916204622416, 2519324127973915344880, 153818507566307018434672

Offset

1,1

Comments

Column 3 of A235665

Links

R. H. Hardin, Table of n, a(n) for n = 1..137

Example

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

Crossrefs

Sequence in context: A142587 A116496 A235667 * A235428 A178280 A235745

Adjacent sequences: A235660 A235661 A235662 * A235664 A235665 A235666

Keyword

nonn

Author

R. H. Hardin, Jan 13 2014

Status

approved