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A027938 as a simple table

n a(n)
2 1
3 16
4 92
5 365
6 1204
7 3588
8 10093
9 27476
10 73440
11 194345
12 511576
13 1342936
14 3520457
15 9222440
16 24151764
17 63238773
18 165571628
19 433484476
20 1134891605
21 2971201740
22 7778726776 

[1,16,92,365,1204,3588,10093,27476,73440,194345,
 511576,1342936,3520457,9222440,24151764,63238773,
 165571628,433484476,1134891605,2971201740,
 7778726776]

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Last modified January 16 05:52 EST 2021. Contains 340195 sequences. (Running on oeis4.)