A235427 Number of (n+1)X(2+1) 0..3 arrays with the difference between each 2X2 subblock maximum and minimum lexicographically nondecreasing rowwise and columnwise

3038, 112442, 3874844, 119751976, 3475660106, 95292647278, 2512120106496, 64153830106994, 1600446073292528, 39201292057599402, 946993165785847438, 22633272877683534154, 536552802911290491046, 12640620869455915299860

Offset

1,1

Comments

Column 2 of A235430

Links

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

Example

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

Crossrefs

Sequence in context: A235218 A235662 A235666 * A326416 A236297 A297893

Adjacent sequences: A235424 A235425 A235426 * A235428 A235429 A235430

Keyword

nonn

Author

R. H. Hardin, Jan 10 2014

Status

approved