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A157135 as a simple table

n a(n)
0 1
1 1
2 2
3 5
4 15
5 50
6 177
7 649
8 2437
9 9322
10 36214
11 142546
12 567409
13 2280246
14 9238883
15 37699021
16 154783906
17 638983998
18 2650697658
19 11043733080
20 46192300706
21 193892210528
22 816486626337
23 3448376227978
24 14603301098654
25 61996178908151

[1,1,2,5,15,50,177,649,2437,9322,36214,142546,
 567409,2280246,9238883,37699021,154783906,
 638983998,2650697658,11043733080,46192300706,
 193892210528,816486626337,3448376227978,
 14603301098654,61996178908151]

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Last modified April 24 12:01 EDT 2019. Contains 322429 sequences. (Running on oeis4.)