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A071731 as a simple table

n a(n)
0 1
1 2
2 5
3 15
4 46
5 146
6 477
7 1595
8 5434
9 18798
10 65858
11 233206
12 833340
13 3001316
14 10883485
15 39703635
16 145612770
17 536568150
18 1985612310
19 7376106210
20 27495861060
21 102820589820
22 385609643250
23 1449998633694
24 5465731321476

[1,2,5,15,46,146,477,1595,5434,18798,65858,233206,
 833340,3001316,10883485,39703635,145612770,
 536568150,1985612310,7376106210,27495861060,
 102820589820,385609643250,1449998633694,
 5465731321476]

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Last modified June 28 17:16 EDT 2022. Contains 354907 sequences. (Running on oeis4.)