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A171061 as a simple table

n a(n)
1 3
2 4
3 15
4 63
5 120
6 143
7 440
8 840
9 1443
10 2303
11 3024
12 3843
13 5775
14 7055
15 7920
16 8463
17 9215
18 10200
19 15375
20 20735
21 23103
22 27224
23 28223
24 39600
25 42024
26 44520
27 50175
28 54288
29 63503
30 76175
31 82943
32 104328
33 108240
34 116280
35 142128
36 171395
37 178083
38 203400
39 212520

[3,4,15,63,120,143,440,840,1443,2303,3024,3843,
 5775,7055,7920,8463,9215,10200,15375,20735,23103,
 27224,28223,39600,42024,44520,50175,54288,63503,
 76175,82943,104328,108240,116280,142128,171395,
 178083,203400,212520]

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Last modified August 14 04:13 EDT 2020. Contains 336477 sequences. (Running on oeis4.)