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A172947 as a simple table

n a(n)
1 1
2 1107
3 2186815
4 5796870115
5 18343212299091
6 65338547748658101
7 253310893747894263177
8 1046591482728407939338275
9 4543765474410728783088589075
10 20524231145279587298876714943337 

[1,1107,2186815,5796870115,18343212299091,
 65338547748658101,253310893747894263177,
 1046591482728407939338275,
 4543765474410728783088589075,
 20524231145279587298876714943337]

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Last modified April 24 03:08 EDT 2024. Contains 371918 sequences. (Running on oeis4.)