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A223926 as a simple table

n a(n)
1 3
2 54
3 1116
4 21334
5 386495
6 6621074
7 108796955
8 1735753333
9 27144561576

[3,54,1116,21334,386495,6621074,108796955,
 1735753333,27144561576]

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Last modified February 1 12:28 EST 2023. Contains 359993 sequences. (Running on oeis4.)