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A224412 Number of 5Xn 0..1 arrays with rows unimodal and antidiagonals nondecreasing 1
32, 324, 1288, 3436, 7812, 16420, 32814, 63202, 118117, 214919, 381436, 661132, 1120283, 1857749, 3018052, 4808608, 7522116, 11565280, 17495232, 26065236, 38281486, 55473066, 79377418, 112243966, 156958871, 217194245, 297585532 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 5 of A224409

LINKS

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

FORMULA

Empirical: a(n) = (1/3628800)*n^10 + (1/80640)*n^9 + (1/3456)*n^8 + (23/5760)*n^7 + (7213/172800)*n^6 + (683/2304)*n^5 + (138869/36288)*n^4 + (32143/2240)*n^3 + (32909/450)*n^2 - (753/20)*n - 44 for n>3

EXAMPLE

Some solutions for n=3

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

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

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

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

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

CROSSREFS

Sequence in context: A221661 A221064 A224161 * A192075 A297611 A201152

Adjacent sequences:  A224409 A224410 A224411 * A224413 A224414 A224415

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 05 2013

STATUS

approved

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Last modified October 5 07:45 EDT 2022. Contains 357252 sequences. (Running on oeis4.)