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A296618 as a simple table

n a(n)
0 1
1 1
2 9
3 89
4 1265
5 22929
6 506809
7 13220521
8 397585761
9 13543386785
10 515418398441
11 21673889807481
12 998003450868049
13 49942515803293489
14 2698849517019693465
15 156631203355106962889
16 9716434375682706344129
17 641592631434102757993281

[1,1,9,89,1265,22929,506809,13220521,397585761,
 13543386785,515418398441,21673889807481,
 998003450868049,49942515803293489,
 2698849517019693465,156631203355106962889,
 9716434375682706344129,641592631434102757993281]

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Last modified August 1 14:14 EDT 2021. Contains 346391 sequences. (Running on oeis4.)