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A222854 as a simple table

n a(n)
1 2
2 6
3 108
4 2262
5 452400
6 113936464
7 391515458264
8 1332606996955912

[2,6,108,2262,452400,113936464,391515458264,
 1332606996955912]

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Last modified April 18 22:18 EDT 2024. Contains 371782 sequences. (Running on oeis4.)