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A120016 as a simple table

n a(n)
1 1
2 1
3 3
4 15
5 106
6 982
7 11383
8 159595
9 2636590
10 50278058
11 1088631886
12 26409797526
13 710034913212
14 20963748887980
15 674521750652735
16 23497037813799795
17 881180319357526102
18 35400836754598975554
19 1516991897621421273210

[1,1,3,15,106,982,11383,159595,2636590,50278058,
 1088631886,26409797526,710034913212,
 20963748887980,674521750652735,23497037813799795,
 881180319357526102,35400836754598975554,
 1516991897621421273210]

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Last modified May 22 20:52 EDT 2022. Contains 353959 sequences. (Running on oeis4.)