|
|
A172720
|
|
Number of 9*n X 2*n 0..2 arrays with row sums 2 and column sums 9
|
|
1
|
|
|
3139, 3423871305383100, 34335031273255183438800013252500, 141178303808277520681079289672968415090175698600000, 52186319789297652611103763179819584756687013016766057690192910549000000
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
LINKS
|
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|