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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A172754 Number of 2*n X n 0..3 arrays with row sums 10 and column sums 20 1
0, 0, 0, 1093050, 37642786694586601, 14162844503221350778432935135, 53130204996192153080609362878028936125345, 1711672166340730383529033759740996945302163471959773200 (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: A109148 A077647 A172647 * A268036 A184384 A086212

Adjacent sequences:  A172751 A172752 A172753 * A172755 A172756 A172757

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 | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified June 25 21:43 EDT 2019. Contains 324357 sequences. (Running on oeis4.)