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A039717 as a simple table

n a(n)
1 1
2 4
3 15
4 55
5 200
6 725
7 2625
8 9500
9 34375
10 124375
11 450000
12 1628125
13 5890625
14 21312500
15 77109375
16 278984375
17 1009375000
18 3651953125
19 13212890625
20 47804687500
21 172958984375
22 625771484375
23 2264062500000
24 8191455078125

[1,4,15,55,200,725,2625,9500,34375,124375,450000,
 1628125,5890625,21312500,77109375,278984375,
 1009375000,3651953125,13212890625,47804687500,
 172958984375,625771484375,2264062500000,
 8191455078125]

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Last modified March 28 16:34 EDT 2024. Contains 371254 sequences. (Running on oeis4.)