login
This site is supported by donations to The OEIS Foundation.

 

Logo

Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing.
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A224267 Number of 7Xn 0..2 arrays with rows and antidiagonals unimodal and columns nondecreasing 1
36, 1296, 24842, 296646, 2485967, 15921905, 83124099, 371699763, 1478187738, 5375576014, 18237850918, 58547208334, 179599458173, 530112786109, 1512954573026, 4190185564746, 11292006460221, 29674041029167 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 7 of A224262

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..41

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

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

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

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

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

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

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

CROSSREFS

Sequence in context: A158700 A144128 A223405 * A223924 A224352 A224194

Adjacent sequences:  A224264 A224265 A224266 * A224268 A224269 A224270

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 02 2013

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 5 21:00 EST 2019. Contains 329779 sequences. (Running on oeis4.)