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A000877 as a simple table

n a(n)
1 5
2 20
3 206
4 54155
5 309771751363
6 2813362279226503905263636259
7 117782620520968191503190785913014275478335890027037842956986579

[5,20,206,54155,309771751363,
 2813362279226503905263636259,
 11778262052096819150319078591301427547833589002703\
 7842956986579]

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Last modified September 24 22:46 EDT 2021. Contains 347651 sequences. (Running on oeis4.)