A235667 Number of (3+1)X(n+1) 0..3 arrays with the difference between each 2X2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise

33610, 3377510, 314516602, 25757334784, 1985139761308, 143468661921620, 9943144779735306, 663721389380552504, 43067478348737689590, 2728158285998906700578, 169524380931449477078492

Offset

1,1

Comments

Row 3 of A235665

Links

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

Example

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

Crossrefs

Sequence in context: A217565 A142587 A116496 * A235663 A235428 A178280

Adjacent sequences: A235664 A235665 A235666 * A235668 A235669 A235670

Keyword

nonn

Author

R. H. Hardin, Jan 13 2014

Status

approved