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A217860 as a simple table

n a(n)
1 1
2 4
3 11
4 33
5 88
6 254
7 697
8 1984
9 5585
10 15938
11 45424
12 130381
13 374450
14 1079361
15 3115291
16 9010177
17 26090857
18 75656608
19 219603868
20 638075127
21 1855506355
22 5399995044
23 15726096741
24 45827313178
25 133621409595
26 389814176004
27 1137757623214
28 3322288247568
29 9705228070231
30 26283373417131

[1,4,11,33,88,254,697,1984,5585,15938,45424,
 130381,374450,1079361,3115291,9010177,26090857,
 75656608,219603868,638075127,1855506355,
 5399995044,15726096741,45827313178,133621409595,
 389814176004,1137757623214,3322288247568,
 9705228070231,26283373417131]

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Last modified April 20 01:36 EDT 2021. Contains 343117 sequences. (Running on oeis4.)