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A235430 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the difference between each 2X2 subblock maximum and minimum lexicographically nondecreasing rowwise and columnwise 5
256, 3038, 3038, 33610, 112442, 33610, 344668, 3874844, 3874844, 344668, 3402366, 119751976, 439379938, 119751976, 3402366, 32542312, 3475660106, 44578500538, 44578500538, 3475660106, 32542312, 304784986, 95292647278, 4199042223300 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

........256..........3038...........33610...........344668..........3402366

.......3038........112442.........3874844........119751976.......3475660106

......33610.......3874844.......439379938......44578500538....4199042223300

.....344668.....119751976.....44578500538...15581843596522.5142104597554476

....3402366....3475660106...4199042223300.5142104597554476

...32542312...95292647278.363811777078888

..304784986.2512120106496

.2807381170

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..40

FORMULA

Empirical for column k:

k=1: [linear recurrence of order 12]

EXAMPLE

Some solutions for n=2 k=4

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

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

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

CROSSREFS

Sequence in context: A205935 A205928 A235665 * A235426 A236299 A236296

Adjacent sequences:  A235427 A235428 A235429 * A235431 A235432 A235433

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Jan 10 2014

STATUS

approved

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Last modified October 28 10:09 EDT 2020. Contains 338053 sequences. (Running on oeis4.)