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A002628 as a simple table

n a(n)
0 1
1 1
2 2
3 5
4 21
5 106
6 643
7 4547
8 36696
9 332769
10 3349507
11 37054436
12 446867351
13 5834728509
14 82003113550
15 1234297698757
16 19809901558841
17 337707109446702
18 6094059760690035
19 116052543892621951
20 2325905946434516516
21 48937614361477154273
22 1078523843237914046247

[1,1,2,5,21,106,643,4547,36696,332769,3349507,
 37054436,446867351,5834728509,82003113550,
 1234297698757,19809901558841,337707109446702,
 6094059760690035,116052543892621951,
 2325905946434516516,48937614361477154273,
 1078523843237914046247]

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Last modified April 24 18:17 EDT 2024. Contains 371962 sequences. (Running on oeis4.)