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A269410 as a simple table

n a(n)
1 9
2 63
3 222
4 570
5 1215
6 2289
7 3948
8 6372
9 9765
10 14355
11 20394
12 28158
13 37947
14 50085
15 64920
16 82824
17 104193
18 129447
19 159030
20 193410
21 233079
22 278553
23 330372
24 389100
25 455325
26 529659
27 612738
28 705222
29 807795
30 921165
31 1046064
32 1183248
33 1333497

[9,63,222,570,1215,2289,3948,6372,9765,14355,
 20394,28158,37947,50085,64920,82824,104193,129447,
 159030,193410,233079,278553,330372,389100,455325,
 529659,612738,705222,807795,921165,1046064,
 1183248,1333497]

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Last modified December 4 19:40 EST 2021. Contains 349526 sequences. (Running on oeis4.)