n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 13 |
5 | 36 |
6 | 104 |
7 | 309 |
8 | 939 |
9 | 2905 |
10 | 9118 |
11 | 28964 |
12 | 92940 |
13 | 300808 |
14 | 980864 |
15 | 3219205 |
16 | 10626023 |
17 | 35252867 |
18 | 117485454 |
19 | 393133485 |
20 | 1320357501 |
21 | 4449298136 |
22 | 15038769672 |
23 | 50973266380 |
24 | 173214422068 |
25 | 589998043276 |
26 | 2014026871496 |
27 | 6889055189032 |
28 | 23608722350440 |
[1,1,2,5,13,36,104,309,939,2905,9118,28964,92940, 300808,980864,3219205,10626023,35252867,117485454, 393133485,1320357501,4449298136,15038769672, 50973266380,173214422068,589998043276, 2014026871496,6889055189032,23608722350440] |