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A189281 as a simple table

n a(n)
0 1
1 1
2 2
3 5
4 18
5 75
6 410
7 2729
8 20906
9 181499
10 1763490
11 18943701
12 222822578
13 2847624899
14 39282739034
15 581701775369
16 9202313110506
17 154873904848803
18 2762800622799362
19 52071171437696453
20 1033855049655584786
21 21567640717569135515

[1,1,2,5,18,75,410,2729,20906,181499,1763490,
 18943701,222822578,2847624899,39282739034,
 581701775369,9202313110506,154873904848803,
 2762800622799362,52071171437696453,
 1033855049655584786,21567640717569135515]

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Last modified April 25 16:45 EDT 2024. Contains 371989 sequences. (Running on oeis4.)