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A186886 as a simple table

n a(n)
1 2
2 55
3 665
4 6545
5 85085
6 1616615
7 37182145

[2,55,665,6545,85085,1616615,37182145]

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Last modified April 25 10:34 EDT 2024. Contains 371967 sequences. (Running on oeis4.)