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

 

Logo

Annual Appeal: Today, Nov 11 2014, is the 4th anniversary of the launch of the new OEIS web site. 70,000 sequences have been added in these four years, all edited by volunteers. Please make a donation (tax deductible in the US) to help keep the OEIS running.

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 November 26 23:13 EST 2014. Contains 250152 sequences.