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A086400 as a simple table

n a(n)
1 1
2 4
3 18
4 527
5 3218
6 138634
7 957857
8 49120018
9 20473889132
10 156766505690
11 74324776
12 203270
13 4686290685410776
14 37541445026997947
15 2445882966702428971
16 13279375056930183
17 42712
18 743757817682170309535791

[1,4,18,527,3218,138634,957857,49120018,
 20473889132,156766505690,74324776,203270,
 4686290685410776,37541445026997947,
 2445882966702428971,13279375056930183,42712,
 743757817682170309535791]

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Last modified March 29 09:28 EDT 2024. Contains 371268 sequences. (Running on oeis4.)