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A121348 as a simple table

n a(n)
2 1
3 12
4 456
5 9360
6 155520
7 21772800
8 1146700800
9 44503603200
10 11860515072000
11 1237663494144000
12 107797432393728000
13 36342886035456000000
14 6476053728774389760000
15 1089563850990959984640000

[1,12,456,9360,155520,21772800,1146700800,
 44503603200,11860515072000,1237663494144000,
 107797432393728000,36342886035456000000,
 6476053728774389760000,1089563850990959984640000]

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Last modified September 26 13:34 EDT 2021. Contains 347668 sequences. (Running on oeis4.)