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A090816 as a simple table

n a(n)
0 1
1 12
2 105
3 840
4 6435
5 48048
6 352716
7 2558160
8 18386775
9 131231100
10 931395465
11 6580248480
12 46312074900
13 324897017760
14 2272989850440
15 15863901576864
16 110487596768703
17 768095592509700
18 5330949171823275
19 36945070220658600
20 255702514854135195
21 1767643865751234240

[1,12,105,840,6435,48048,352716,2558160,18386775,
 131231100,931395465,6580248480,46312074900,
 324897017760,2272989850440,15863901576864,
 110487596768703,768095592509700,5330949171823275,
 36945070220658600,255702514854135195,
 1767643865751234240]

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Last modified August 9 20:04 EDT 2024. Contains 375044 sequences. (Running on oeis4.)