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A012780 as a simple table

n a(n)
0 1
1 3
2 45
3 1743
4 133305
5 17089083
6 3302755365
7 896199578823
8 324729845802225
9 151401766241310963
10 88276508686397289885
11 62925559543228826845503
12 53835082550295989275314345
13 54438337988081689498005862443

[1,3,45,1743,133305,17089083,3302755365,
 896199578823,324729845802225,151401766241310963,
 88276508686397289885,62925559543228826845503,
 53835082550295989275314345,
 54438337988081689498005862443]

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Last modified January 18 11:57 EST 2022. Contains 350455 sequences. (Running on oeis4.)