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A118342 as a simple table

n a(n)
0 1
1 3
2 15
3 85
4 519
5 3330
6 22135
7 151089
8 1052805
9 7458236
10 53554548
11 388913046
12 2851368587
13 21076979445
14 156907929177
15 1175381112901
16 8853057357159
17 67007699270040
18 509390314298820
19 3887605401119964
20 29775366104932044

[1,3,15,85,519,3330,22135,151089,1052805,7458236,
 53554548,388913046,2851368587,21076979445,
 156907929177,1175381112901,8853057357159,
 67007699270040,509390314298820,3887605401119964,
 29775366104932044]

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Last modified November 25 08:30 EST 2020. Contains 338623 sequences. (Running on oeis4.)