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A222785 as a simple table

n a(n)
1 2
2 6
3 12
4 24
5 40
6 72
7 126
8 240
9 648
10 2340
11 4320
12 7398
13 17400
14 27720
15 49896
16 93150
17 196560

[2,6,12,24,40,72,126,240,648,2340,4320,7398,17400,
 27720,49896,93150,196560]

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Last modified August 19 18:30 EDT 2022. Contains 356229 sequences. (Running on oeis4.)