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

 

Logo

Many excellent designs for a new banner were submitted. We will use the best of them in rotation.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A172726 Number of n X n 0..3 arrays with row sums 18 and column sums 18 0
0, 0, 0, 0, 0, 1, 4662857360, 54450121092072227480, 1469748355306450464225368161315, 111562091000778108490941203120508002739900 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,7

LINKS

Table of n, a(n) for n=1..10.

CROSSREFS

Sequence in context: A114670 A092776 A034916 * A172797 A199631 A124977

Adjacent sequences:  A172723 A172724 A172725 * A172727 A172728 A172729

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 06 2010

STATUS

approved

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

Content is available under The OEIS End-User License Agreement .

Last modified April 20 02:01 EDT 2014. Contains 240777 sequences.