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A223861 Number of nX5 0..3 arrays with rows and antidiagonals unimodal and columns nondecreasing 1
296, 14751, 273959, 3017129, 23738426, 145947740, 740441932, 3217594840, 12305144319, 42270004211, 132509660564, 383868226325, 1038081470947, 2642374422155, 6374651949942, 14659617536977, 32293516183091 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A223864

LINKS

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

FORMULA

Empirical: a(n) = (769/444787200)*n^15 + (769/14826240)*n^14 + (1364177/1556755200)*n^13 + (4745443/479001600)*n^12 + (19610293/239500800)*n^11 + (21660577/43545600)*n^10 + (51383569/21772800)*n^9 + (4604039/537600)*n^8 + (65760287/2721600)*n^7 + (2366026111/43545600)*n^6 + (21481491623/239500800)*n^5 + (11196959227/119750400)*n^4 - (1120821577/51891840)*n^3 - (1312521589/10810800)*n^2 + (8123611/51480)*n - 113 for n>2

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A206339 A107924 A224170 * A223984 A224061 A224047

Adjacent sequences:  A223858 A223859 A223860 * A223862 A223863 A223864

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 28 2013

STATUS

approved

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Last modified January 21 10:25 EST 2022. Contains 350477 sequences. (Running on oeis4.)