A235503 Number of (n+1)X(2+1) 0..3 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing rowwise and columnwise

2982, 108648, 3945383, 123132965, 3714091695, 103423011021, 2793351835442, 72239093710651, 1829055476890911, 45202879299137156, 1102383964087038967, 26524099399460940827, 633214304285732248830, 15005899959785143753881

Offset

1,1

Comments

Column 2 of A235506

Links

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

Example

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

Crossrefs

Sequence in context: A360666 A202775 A235744 * A120373 A365258 A186866

Adjacent sequences: A235500 A235501 A235502 * A235504 A235505 A235506

Keyword

nonn

Author

R. H. Hardin, Jan 11 2014

Status

approved