login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 59th year, we have over 358,000 sequences, and we’ve crossed 10,300 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A172601 Number of 7*n X n 0..1 arrays with row sums 3 and column sums 21 1
0, 0, 1, 472518347558400, 49825573548689359631837113344000, 187524788254217999458899339512832890227588026696000, 17188521061665681913347495181567174669437929715236078389999795132800000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

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

CROSSREFS

Sequence in context: A175531 A186914 A172665 * A086438 A261149 A104873

Adjacent sequences: A172598 A172599 A172600 * A172602 A172603 A172604

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 | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 6 21:00 EST 2022. Contains 358648 sequences. (Running on oeis4.)