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A291039 as a simple table

n a(n)
0 1
1 3
2 8
3 21
4 54
5 136
6 337
7 825
8 2000
9 4809
10 11484
11 27264
12 64401
13 151455
14 354808
15 828349
16 1927986
17 4475080
18 10361441
19 23936565
20 55183904
21 126983569
22 291698040
23 669004352
24 1532095329
25 3503889147
26 8003207912
27 18258464741
28 41608726254
29 94722900936
30 215428701233

[1,3,8,21,54,136,337,825,2000,4809,11484,27264,
 64401,151455,354808,828349,1927986,4475080,
 10361441,23936565,55183904,126983569,291698040,
 669004352,1532095329,3503889147,8003207912,
 18258464741,41608726254,94722900936,215428701233]

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Last modified April 24 15:36 EDT 2024. Contains 371960 sequences. (Running on oeis4.)