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A216814 as a simple table

n a(n)
2 2
3 4
4 10
5 12
6 84
7 264
8 990
9 2860
10 9724
11 18564
12 117572
13 45220
14 19380
15 1782960
16 6463230
17 25092540
18 58549260
19 95527740 

[2,4,10,12,84,264,990,2860,9724,18564,117572,
 45220,19380,1782960,6463230,25092540,58549260,
 95527740]

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Last modified April 19 08:45 EDT 2024. Contains 371782 sequences. (Running on oeis4.)