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A002817 as a simple table

n a(n)
0 0
1 1
2 6
3 21
4 55
5 120
6 231
7 406
8 666
9 1035
10 1540
11 2211
12 3081
13 4186
14 5565
15 7260
16 9316
17 11781
18 14706
19 18145
20 22155
21 26796
22 32131
23 38226
24 45150
25 52975
26 61776
27 71631
28 82621
29 94830
30 108345
31 123256
32 139656
33 157641
34 177310
35 198765
36 222111
37 247456
38 274911
39 304590

[0,1,6,21,55,120,231,406,666,1035,1540,2211,3081,
 4186,5565,7260,9316,11781,14706,18145,22155,26796,
 32131,38226,45150,52975,61776,71631,82621,94830,
 108345,123256,139656,157641,177310,198765,222111,
 247456,274911,304590]

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Last modified April 10 16:16 EDT 2021. Contains 342845 sequences. (Running on oeis4.)