n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 10 |
5 | 27 |
6 | 73 |
7 | 189 |
8 | 518 |
9 | 1413 |
10 | 3857 |
11 | 10707 |
12 | 29804 |
13 | 83365 |
14 | 234665 |
15 | 662654 |
16 | 1878059 |
17 | 5341302 |
18 | 15231940 |
19 | 43552610 |
20 | 124829236 |
21 | 358537455 |
22 | 1031835260 |
23 | 2974872009 |
24 | 8590929683 |
25 | 24847042484 |
26 | 71964879243 |
27 | 208704926659 |
[1,1,2,5,10,27,73,189,518,1413,3857,10707,29804, 83365,234665,662654,1878059,5341302,15231940, 43552610,124829236,358537455,1031835260, 2974872009,8590929683,24847042484,71964879243, 208704926659] |