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A222971
Number of 3 X (n+1) 0..1 arrays with every row least squares fitting to a positive-slope straight line and every column least squares fitting to a zero- or positive-slope straight line, with a single point array taken as having zero slope.
1
1, 6, 96, 576, 5180, 28836, 222887, 1241310, 8712264, 48837168, 328280478, 1854039060, 12126536066, 69047705664, 443482507552, 2544063717888, 16136462307440, 93109093464048, 585311170019020, 3393940344415872
OFFSET
1,2
LINKS
EXAMPLE
Some solutions for n=3:
0 1 0 1 0 0 0 1 0 1 1 1 0 0 0 1 0 0 1 1
0 1 1 1 0 1 1 1 0 0 0 1 0 0 1 1 0 1 1 1
0 1 0 1 0 0 0 1 0 1 1 1 0 1 0 1 0 1 1 1
CROSSREFS
Row 3 of A222969.
Sequence in context: A116289 A116256 A275086 * A196813 A179058 A303212
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 10 2013
STATUS
approved