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A000080 as a simple table

n a(n)
3 1
4 1
5 2
6 4
7 9
8 19
9 48
10 117
11 307
12 821
13 2277
14 6437
15 18634
16 54775
17 163703
18 495529
19 1518706
20 4703848
21 14714754
22 46444979
23 147832051
24 474229588
25 1532565644

[1,1,2,4,9,19,48,117,307,821,2277,6437,18634,
 54775,163703,495529,1518706,4703848,14714754,
 46444979,147832051,474229588,1532565644]

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Last modified October 19 18:28 EDT 2018. Contains 316377 sequences. (Running on oeis4.)