A189447 - OEIS

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A189447 as a simple table

n	a(n)
1	21
2	3136
3	313136
4	33735505
5	3586575040
6	381987110556
7	40668908306516
8	4329976369716644
9	461007230769131204
10	49082883213353553796
11	5225795314666113134276
12	556384119909347581932164

[21,3136,313136,33735505,3586575040,381987110556, 40668908306516,4329976369716644, 461007230769131204,49082883213353553796, 5225795314666113134276,556384119909347581932164]