|
|
A058527
|
|
Number of 2n X 2n 0-1 matrices with n ones in each row and each column.
|
|
3
|
|
|
1, 2, 90, 297200, 116963796250, 6736218287430460752, 64051375889927380035549804336, 108738182111446498614705217754614976371200, 34812290428176298285394893936773707951192224124239796250, 2188263032066768922535710968724036448759525154977348944382853301460850000
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
0,2
|
|
COMMENTS
|
|
|
LINKS
|
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
EXTENSIONS
|
More terms (using dynamic programming in Python) from Greg Kuperberg, Feb 08 2001
|
|
STATUS
|
approved
|
|
|
|