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A245850 Number of length n 0..7 arrays with new values introduced in order from both ends, and least squares fitting to a straight line with slope zero, with a single point taken as having zero slope 1
1, 1, 2, 2, 5, 5, 15, 17, 78, 102, 569, 919, 6143, 11171, 86082, 175170, 1500088, 3364342, 31535985, 77009999, 782070479, 2060080119, 22479986118, 63401859508, 738236317300, 2214267997760, 27326431358171, 86567146969997 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Column 7 of A245851

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..40

EXAMPLE

Some solutions for n=12

..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0

..1....0....0....0....1....0....1....1....1....1....1....1....1....0....1....1

..0....0....1....1....0....1....2....2....1....2....2....1....0....0....2....0

..2....0....2....2....2....2....2....0....2....0....3....2....1....1....2....2

..2....0....3....2....1....1....1....0....3....1....2....3....0....2....1....3

..1....1....1....3....0....3....1....0....0....1....1....4....2....2....3....1

..3....1....1....3....0....3....2....2....2....0....1....4....2....1....3....0

..0....0....1....2....1....1....3....0....0....2....2....3....0....0....1....2

..0....0....0....2....2....2....2....1....2....1....3....2....1....1....2....0

..2....0....2....1....0....1....1....1....2....1....2....1....0....1....2....2

..1....0....1....0....1....0....1....1....1....1....1....1....1....0....1....1

..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0

CROSSREFS

Sequence in context: A245847 A245848 A245849 * A245844 A083849 A326512

Adjacent sequences:  A245847 A245848 A245849 * A245851 A245852 A245853

KEYWORD

nonn

AUTHOR

R. H. Hardin, Aug 04 2014

STATUS

approved

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Last modified February 20 07:39 EST 2020. Contains 332069 sequences. (Running on oeis4.)