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A223924 Number of 7Xn 0..2 arrays with rows and antidiagonals unimodal and columns nondecreasing 1
36, 1296, 26494, 359344, 3588729, 28247478, 183720802, 1022160764, 4994941017, 21887522070, 87447220301, 322906269126, 1114442061385, 3628609366226, 11233293675288, 33279853366178, 94865889314403, 261354658486111 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 7 of A223918

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

R. H. Hardin, Empirical polynomial of degree 28

FORMULA

Empirical polynomial of degree 28 (see link above)

EXAMPLE

Some solutions for n=3

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

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

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

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

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

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

..2..2..1....2..2..2....2..2..1....2..2..2....2..2..2....1..2..2....2..2..1

CROSSREFS

Sequence in context: A144128 A223405 A224267 * A224352 A224194 A224011

Adjacent sequences:  A223921 A223922 A223923 * A223925 A223926 A223927

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 29 2013

STATUS

approved

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Last modified May 23 12:48 EDT 2022. Contains 353975 sequences. (Running on oeis4.)