A235504 Number of (n+1)X(3+1) 0..3 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing rowwise and columnwise

33640, 3945383, 490074558, 51929974331, 5302813444717, 486511569699939, 42291681755835352, 3427953232697851324, 265272758284291968338, 19577770025610345890094, 1394126518359017147630547

Offset

1,1

Comments

Column 3 of A235506

Links

R. H. Hardin, Table of n, a(n) for n = 1..143

Example

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

Crossrefs

Sequence in context: A235428 A178280 A235745 * A355142 A297127 A234187

Adjacent sequences: A235501 A235502 A235503 * A235505 A235506 A235507

Keyword

nonn

Author

R. H. Hardin, Jan 11 2014

Status

approved