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A230345 as a simple table

n a(n)
0 1
1 12
2 181
3 3322
4 72540
5 1845480
6 53749920
7 1766525760
8 64739122560
9 2619453513600
10 116043825744000
11 5588681114016000
12 290812286052288000
13 16263827918642304000
14 973009916329651200000
15 62017234027123415040000
16 4195886889891954216960000

[1,12,181,3322,72540,1845480,53749920,1766525760,
 64739122560,2619453513600,116043825744000,
 5588681114016000,290812286052288000,
 16263827918642304000,973009916329651200000,
 62017234027123415040000,4195886889891954216960000]

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Last modified May 31 19:37 EDT 2020. Contains 334748 sequences. (Running on oeis4.)