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A212917 as a simple table

n a(n)
0 1
1 1
2 3
3 31
4 469
5 9681
6 254701
7 8131999
8 305626329
9 13218345793
10 646712664121
11 35315446759671
12 2129341219106773
13 140506900034640049
14 10071589943109973461
15 779311468200041101711
16 64742128053980794659121
17 5747587082198264156035329
18 543023929087191507383612785

[1,1,3,31,469,9681,254701,8131999,305626329,
 13218345793,646712664121,35315446759671,
 2129341219106773,140506900034640049,
 10071589943109973461,779311468200041101711,
 64742128053980794659121,5747587082198264156035329,
 543023929087191507383612785]

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Last modified April 23 10:57 EDT 2021. Contains 343204 sequences. (Running on oeis4.)