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A015448 as a simple table

n a(n)
0 1
1 1
2 5
3 21
4 89
5 377
6 1597
7 6765
8 28657
9 121393
10 514229
11 2178309
12 9227465
13 39088169
14 165580141
15 701408733
16 2971215073
17 12586269025
18 53316291173
19 225851433717
20 956722026041
21 4052739537881
22 17167680177565
23 72723460248141
24 308061521170129
25 1304969544928657
26 5527939700884757

[1,1,5,21,89,377,1597,6765,28657,121393,514229,
 2178309,9227465,39088169,165580141,701408733,
 2971215073,12586269025,53316291173,225851433717,
 956722026041,4052739537881,17167680177565,
 72723460248141,308061521170129,1304969544928657,
 5527939700884757]

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Last modified March 29 03:41 EDT 2024. Contains 371264 sequences. (Running on oeis4.)