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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 1
3038, 112442, 3874844, 119751976, 3475660106, 95292647278, 2512120106496, 64153830106994, 1600446073292528, 39201292057599402, 946993165785847438, 22633272877683534154, 536552802911290491046, 12640620869455915299860 (list; graph; refs; listen; history; text; internal format)
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

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Last modified September 27 19:04 EDT 2020. Contains 337388 sequences. (Running on oeis4.)