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A087630 as a simple table

n a(n)
1 0
2 5
3 35
4 266
5 2081
6 17230
7 146487
8 1274194
9 11271088
10 101050133
11 915755611
12 8372443850
13 77114409020

[0,5,35,266,2081,17230,146487,1274194,11271088,
 101050133,915755611,8372443850,77114409020]

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Last modified March 29 03:51 EDT 2024. Contains 371264 sequences. (Running on oeis4.)