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A235445
Number of (n+1)X(4+1) 0..1 arrays with the difference between each 2X2 subblock maximum and minimum lexicographically nondecreasing rowwise and columnwise
1
742, 15936, 335898, 7017768, 146213244, 3043145826, 63315473350, 1317184566572, 27401048899854, 570010121664030, 11857587445735140, 246666181271526484, 5131244813184060086, 106742118037538403444, 2220490316595946662760
OFFSET
1,1
COMMENTS
Column 4 of A235449
FORMULA
Empirical recurrence of order 53 (see link above)
EXAMPLE
Some solutions for n=2
..1..1..1..0..1....1..0..1..1..0....1..1..0..0..0....0..1..0..0..0
..1..0..1..1..1....0..0..1..0..0....1..0..1..1..1....1..1..1..1..0
..1..0..0..1..0....0..1..0..1..1....0..0..1..0..0....0..0..0..1..1
CROSSREFS
Sequence in context: A252576 A188483 A235675 * A349677 A119595 A289141
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 10 2014
STATUS
approved