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A024427 as a simple table

n a(n)
1 1
2 1
3 2
4 4
5 9
6 22
7 58
8 164
9 495
10 1587
11 5379
12 19195
13 71872
14 281571
15 1151338
16 4902687
17 21696505
18 99598840
19 473466698
20 2327173489
21 11810472444
22 61808852380
23 333170844940
24 1847741027555
25 10532499571707
26 61649191750137
27 370208647200165
28 2278936037262610

[1,1,2,4,9,22,58,164,495,1587,5379,19195,71872,
 281571,1151338,4902687,21696505,99598840,
 473466698,2327173489,11810472444,61808852380,
 333170844940,1847741027555,10532499571707,
 61649191750137,370208647200165,2278936037262610]

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Last modified March 28 09:04 EDT 2024. Contains 371240 sequences. (Running on oeis4.)