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A173271 as a simple table

n a(n)
0 1
1 2
2 3
3 5
4 10
5 22
6 57
7 165
8 534
9 1819
10 6474
11 23547
12 87147
13 325738
14 1227709
15 4654285
16 17733540
17 67841449
18 260463501
19 1003087733
20 3873759683
21 14996820361
22 58188678049
23 226235685777
24 881235386180
25 3438462430944
26 13437551253019

[1,2,3,5,10,22,57,165,534,1819,6474,23547,87147,
 325738,1227709,4654285,17733540,67841449,
 260463501,1003087733,3873759683,14996820361,
 58188678049,226235685777,881235386180,
 3438462430944,13437551253019]

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Last modified March 28 11:59 EDT 2024. Contains 371254 sequences. (Running on oeis4.)