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A001820 as a simple table

n a(n)
0 1
1 14
2 273
3 7645
4 296296
5 15291640
6 1017067024
7 84865562640
8 8689315795776
9 1071814846360896
10 156823829909121024
11 26862299458337581056
12 5325923338791614078976
13 1210310405427816646041600
14 312542036038910895995289600
15 91018216923341770801874534400 

[1,14,273,7645,296296,15291640,1017067024,
 84865562640,8689315795776,1071814846360896,
 156823829909121024,26862299458337581056,
 5325923338791614078976,1210310405427816646041600,
 312542036038910895995289600,
 91018216923341770801874534400]

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Last modified May 12 22:27 EDT 2024. Contains 372496 sequences. (Running on oeis4.)