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A000020 as a simple table

n a(n)
1 2
2 1
3 2
4 2
5 6
6 6
7 18
8 16
9 48
10 60
11 176
12 144
13 630
14 756
15 1800
16 2048
17 7710
18 7776
19 27594
20 24000
21 84672
22 120032
23 356960
24 276480
25 1296000
26 1719900
27 4202496
28 4741632
29 18407808
30 17820000
31 69273666
32 67108864
33 211016256
34 336849900
35 929275200
36 725594112
37 3697909056

[2,1,2,2,6,6,18,16,48,60,176,144,630,756,1800,
 2048,7710,7776,27594,24000,84672,120032,356960,
 276480,1296000,1719900,4202496,4741632,18407808,
 17820000,69273666,67108864,211016256,336849900,
 929275200,725594112,3697909056]

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Last modified March 29 00:26 EDT 2024. Contains 371264 sequences. (Running on oeis4.)