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A065780 as a simple table

n a(n)
1 5
2 15
3 35
4 285
5 4035
6 2660285
7 40530004035
8 478354453999997339715
9 31246194523464509984000000000040530004035
10 8209490213224904365731763888026434805200000000000000000000478354453999997339715

[5,15,35,285,4035,2660285,40530004035,
 478354453999997339715,
 31246194523464509984000000000040530004035,
 82094902132249043657317638880264348052000000000000\
 00000000478354453999997339715]

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Last modified April 12 06:13 EDT 2024. Contains 371623 sequences. (Running on oeis4.)