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A307251 as a simple table

n a(n)
1 1
2 3
3 7
4 21
5 56
6 63
7 168
8 252
9 504
10 819
11 2184
12 3276
13 6552
14 15561
15 32760
16 62244
17 124488
18 482391
19 622440
20 1929564
21 3859128
22 17848467
23 19295640
24 71393868
25 142787736
26 713938680
27 3069936324
28 6139872648
29 30699363240
30 187266115764
31 337692995640
32 374532231528

[1,3,7,21,56,63,168,252,504,819,2184,3276,6552,
 15561,32760,62244,124488,482391,622440,1929564,
 3859128,17848467,19295640,71393868,142787736,
 713938680,3069936324,6139872648,30699363240,
 187266115764,337692995640,374532231528]

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Last modified May 28 17:37 EDT 2020. Contains 334684 sequences. (Running on oeis4.)