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A027070 as a simple table

n a(n)
0 1
1 1
2 1
3 4
4 6
5 12
6 31
7 73
8 183
9 476
10 1248
11 3322
12 8943
13 24271
14 66355
15 182538
16 504824
17 1402682
18 3913585
19 10959499
20 30792445
21 86775340
22 245204312
23 694603032
24 1972115945
25 5610955925
26 15994866669
27 45677496204
28 130661330526
29 374339736820
30 1074025873959
31 3085699969569
32 8876601230175

[1,1,1,4,6,12,31,73,183,476,1248,3322,8943,24271,
 66355,182538,504824,1402682,3913585,10959499,
 30792445,86775340,245204312,694603032,1972115945,
 5610955925,15994866669,45677496204,130661330526,
 374339736820,1074025873959,3085699969569,
 8876601230175]

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Last modified May 1 19:14 EDT 2024. Contains 372176 sequences. (Running on oeis4.)