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A235428 Number of (n+1)X(3+1) 0..3 arrays with the difference between each 2X2 subblock maximum and minimum lexicographically nondecreasing rowwise and columnwise 1
33610, 3874844, 439379938, 44578500538, 4199042223300, 363811777078888, 29522152843610792, 2259166952482232348, 164780478737968331028, 11536732655826361746056, 780631785944102462190274 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A235430

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..189

EXAMPLE

Some solutions for n=1

..1..3..3..1....0..2..1..0....0..2..1..2....1..3..1..2....0..3..0..2

..2..1..0..3....0..0..0..2....2..1..3..2....2..2..2..3....2..1..2..3

CROSSREFS

Sequence in context: A116496 A235667 A235663 * A178280 A235745 A235504

Adjacent sequences:  A235425 A235426 A235427 * A235429 A235430 A235431

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 10 2014

STATUS

approved

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Last modified April 9 20:55 EDT 2020. Contains 333363 sequences. (Running on oeis4.)