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A262187
a(n) = (3^n)! / n!.
0
1, 6, 181440, 1814811575069725360128000000
OFFSET
0,2
COMMENTS
Next term is too large to include.
FORMULA
a(n) = A079288(n)/A000142(n).
EXAMPLE
For n = 2, a(n) = (3^2)! / (2)! = 181440.
MATHEMATICA
Table[(3^n)! / n!, {n, 0, 6}] (* Vincenzo Librandi, Sep 15 2015 *)
PROG
(PARI) a(n) = (3^n)! / n!;
vector(5, n, a(n-1))
(Magma) [Factorial(3^n) / Factorial(n): n in [0..6]]; // Vincenzo Librandi, Sep 15 2015
CROSSREFS
Sequence in context: A076909 A172864 A352022 * A297534 A183765 A358385
KEYWORD
nonn
AUTHOR
Altug Alkan, Sep 14 2015
STATUS
approved