n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 9 |
5 | 21 |
6 | 51 |
7 | 127 |
8 | 322 |
9 | 826 |
10 | 2135 |
11 | 5545 |
12 | 14445 |
13 | 37701 |
14 | 98514 |
15 | 257608 |
16 | 673933 |
17 | 1763581 |
18 | 4615823 |
19 | 12082291 |
20 | 31628466 |
21 | 82798926 |
22 | 216761547 |
23 | 567474769 |
24 | 1485645049 |
25 | 3889431721 |
26 | 10182603746 |
27 | 26658304492 |
28 | 69792188337 |
29 | 182718064101 |
30 | 478361686155 |
31 | 1252366480135 |
[1,1,2,4,9,21,51,127,322,826,2135,5545,14445, 37701,98514,257608,673933,1763581,4615823, 12082291,31628466,82798926,216761547,567474769, 1485645049,3889431721,10182603746,26658304492, 69792188337,182718064101,478361686155, 1252366480135] |