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A109438 as a simple table

n a(n)
0 1
1 5
2 18
3 68
4 253
5 945
6 3526
7 13160
8 49113
9 183293
10 684058
11 2552940
12 9527701
13 35557865
14 132703758
15 495257168
16 1848324913
17 6898042485
18 25743845026
19 96077337620
20 358565505453
21 1338184684193
22 4994173231318
23 18638508241080

[1,5,18,68,253,945,3526,13160,49113,183293,684058,
 2552940,9527701,35557865,132703758,495257168,
 1848324913,6898042485,25743845026,96077337620,
 358565505453,1338184684193,4994173231318,
 18638508241080]

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Last modified May 15 07:17 EDT 2021. Contains 343909 sequences. (Running on oeis4.)