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A198666 as a simple table

n a(n)
1 3
2 401
3 59281
4 16089057
5 4202762288
6 1169280626549
7 319298496941179
8 88036039866608856
9 24178531581358186023
10 6652092118081667287328
11 1828775268871126181679152

[3,401,59281,16089057,4202762288,1169280626549,
 319298496941179,88036039866608856,
 24178531581358186023,6652092118081667287328,
 1828775268871126181679152]

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Last modified January 27 22:37 EST 2022. Contains 350654 sequences. (Running on oeis4.)