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A228820 as a simple table

n a(n)
0 0
1 0
2 1
3 3
4 9
5 24
6 60
7 145
8 342
9 791
10 1800
11 4041
12 8971
13 19733
14 43077
15 93441
16 201592
17 432867
18 925574
19 1971633
20 4185537
21 8857634
22 18691421
23 39339638
24 82599634
25 173050951
26 361825484
27 755140789
28 1573359111
29 3273103135
30 6799507189
31 14106802811
32 29231731788

[0,0,1,3,9,24,60,145,342,791,1800,4041,8971,19733,
 43077,93441,201592,432867,925574,1971633,4185537,
 8857634,18691421,39339638,82599634,173050951,
 361825484,755140789,1573359111,3273103135,
 6799507189,14106802811,29231731788]

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Last modified March 29 05:16 EDT 2024. Contains 371264 sequences. (Running on oeis4.)