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A237941
Number of (n+1)X(4+1) 0..2 arrays with the maximum minus the minimum of every 2X2 subblock equal
1
13893, 946063, 61286941, 4202495253, 287601819479, 19789034062007, 1361783640641509, 93760075445980377, 6455729965264521631, 444524052413011284759, 30608927413972838313369, 2107673147756640534907525
OFFSET
1,1
COMMENTS
Column 4 of A237945
FORMULA
Empirical recurrence of order 54 (see link above)
EXAMPLE
Some solutions for n=1
..0..2..1..2..1....0..1..1..1..0....1..2..1..0..0....2..2..0..0..0
..1..0..1..0..0....2..2..0..2..0....1..2..1..0..1....0..1..2..2..0
CROSSREFS
Sequence in context: A189989 A069302 A109483 * A343085 A343968 A343969
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 16 2014
STATUS
approved