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A000227 as a simple table

n a(n)
0 1
1 3
2 7
3 20
4 55
5 148
6 403
7 1097
8 2981
9 8103
10 22026
11 59874
12 162755
13 442413
14 1202604
15 3269017
16 8886111
17 24154953
18 65659969
19 178482301
20 485165195
21 1318815734
22 3584912846
23 9744803446
24 26489122130
25 72004899337
26 195729609429
27 532048240602
28 1446257064291
29 3931334297144
30 10686474581524

[1,3,7,20,55,148,403,1097,2981,8103,22026,59874,
 162755,442413,1202604,3269017,8886111,24154953,
 65659969,178482301,485165195,1318815734,
 3584912846,9744803446,26489122130,72004899337,
 195729609429,532048240602,1446257064291,
 3931334297144,10686474581524]

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