|
|
A071551
|
|
a(n) = (9n)!/n!^9.
|
|
7
|
|
|
1, 362880, 12504636144000, 1080491954750208000000, 140810154080474667338550000000, 23183587808948692737291767860055162880, 4439413043841128802009762476941510771390464000
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
0,2
|
|
LINKS
|
|
|
MATHEMATICA
|
|
|
PROG
|
(Magma) [Factorial(9*n)/Factorial(n)^9: n in [0..20]]; // Vincenzo Librandi, Aug 13 2014
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|