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A235732
Number of (n+1)X(4+1) 0..1 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise
1
746, 15963, 337412, 7041734, 146785037, 3054397001, 63554803821, 1322113787590, 27503978998503, 572147678579818, 11902082913813364, 247591529985854808, 5150496436912541860, 107142578702763898163, 2228821011220833912388
OFFSET
1,1
COMMENTS
Column 4 of A235736
FORMULA
Empirical recurrence of order 86 (see link above)
EXAMPLE
Some solutions for n=2
..0..0..0..1..0....0..0..0..1..1....0..0..1..0..0....0..0..0..1..0
..1..1..0..1..1....0..1..0..1..0....1..1..1..0..1....0..1..0..1..1
..0..0..1..1..0....0..0..1..1..0....0..0..0..0..0....0..1..1..0..0
CROSSREFS
Sequence in context: A099819 A344014 A051978 * A235513 A252560 A252453
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 15 2014
STATUS
approved