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A074620 as a simple table

n a(n)
0 2
1 14
2 100
3 728
4 5392
5 40544
6 308800
7 2377088
8 18456832
9 144295424
10 1134208000
11 8952731648
12 70896259072
13 562816507904
14 4476410675200
15 35654557073408
16 284296086618112
17 2268726473129984
18 18115958466150400
19 144724547815866368

[2,14,100,728,5392,40544,308800,2377088,18456832,
 144295424,1134208000,8952731648,70896259072,
 562816507904,4476410675200,35654557073408,
 284296086618112,2268726473129984,
 18115958466150400,144724547815866368]

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Last modified October 22 05:29 EDT 2019. Contains 328315 sequences. (Running on oeis4.)