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A208495 as a simple table

n a(n)
1 2
2 16
3 60
4 324
5 1794
6 12654
7 111328
8 1037300
9 13597800
10 200667632
11 3402101520
12 81763293780
13 1957289927740
14 66305181080964
15 2590637896086730
16 114679284980561840
17 7286860676676341916
18 454949245195033857996

[2,16,60,324,1794,12654,111328,1037300,13597800,
 200667632,3402101520,81763293780,1957289927740,
 66305181080964,2590637896086730,
 114679284980561840,7286860676676341916,
 454949245195033857996]

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Last modified December 8 09:49 EST 2021. Contains 349594 sequences. (Running on oeis4.)