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A186117 as a simple table

n a(n)
1 0
2 4
3 23
4 186
5 1914
6 28632
7 1627671
8 3684030412
9 105978177936290

[0,4,23,186,1914,28632,1627671,3684030412,
 105978177936290]

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Last modified August 23 23:35 EDT 2024. Contains 375396 sequences. (Running on oeis4.)