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A145545 as a simple table

n a(n)
1 1
2 1
3 2
4 4
5 9
6 20
7 48
8 115
9 285
10 715
11 1826
12 4711
13 12303
14 32387
15 85964
16 229662
17 617300
18 1667787
19 4527290
20 12340688
21 33766612
22 92707834
23 255329106 

[1,1,2,4,9,20,48,115,285,715,1826,4711,12303,
 32387,85964,229662,617300,1667787,4527290,
 12340688,33766612,92707834,255329106]

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Last modified April 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)