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A000831 as a simple table

n a(n)
0 1
1 2
2 4
3 16
4 80
5 512
6 3904
7 34816
8 354560
9 4063232
10 51733504
11 724566016
12 11070525440
13 183240753152
14 3266330312704
15 62382319599616
16 1270842139934720
17 27507470234550272
18 630424777638805504
19 15250953398036463616
20 388362339077351014400
21 10384044045105304174592

[1,2,4,16,80,512,3904,34816,354560,4063232,
 51733504,724566016,11070525440,183240753152,
 3266330312704,62382319599616,1270842139934720,
 27507470234550272,630424777638805504,
 15250953398036463616,388362339077351014400,
 10384044045105304174592]

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Last modified March 29 02:23 EDT 2024. Contains 371264 sequences. (Running on oeis4.)