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A224308
Number of nX6 0..2 arrays with diagonals and rows unimodal and antidiagonals nondecreasing
1
148, 4690, 61953, 562760, 4420701, 33934344, 268379906, 2215451575, 19023816444, 168305254414, 1519045558334, 13877824165049, 127654546150864, 1178500994429585, 10900361047173008, 100920807678845030
OFFSET
1,1
COMMENTS
Column 6 of A224310
FORMULA
Empirical recurrence of order 88 (see link above)
EXAMPLE
Some solutions for n=3
..0..2..1..1..0..0....0..0..0..2..0..0....0..1..1..0..0..0....1..1..1..0..0..0
..2..2..1..0..0..0....0..2..2..0..0..0....1..1..1..2..1..1....2..2..2..2..1..0
..2..2..1..1..0..0....2..2..1..1..0..0....2..2..2..2..2..2....2..2..2..2..1..0
CROSSREFS
Sequence in context: A224188 A223931 A224055 * A224372 A185478 A210159
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 03 2013
STATUS
approved