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A127223
a(n) = (n^2)!/n!.
3
1, 1, 12, 60480, 871782912000, 129260083694424883200000, 516657398319307246483332566876160000000, 120690846038545150966716699071685590652292228448256000000000
OFFSET
0,3
MATHEMATICA
Table[(n^2)!/(n!), {n, 1, 10}]
CROSSREFS
KEYWORD
nonn
AUTHOR
Artur Jasinski, Jan 09 2007
EXTENSIONS
a(0) = 1 prepended by Peter Luschny, May 20 2019
STATUS
approved