n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 7 |
4 | 17 |
5 | 44 |
6 | 117 |
7 | 305 |
8 | 798 |
9 | 2091 |
10 | 5473 |
11 | 14328 |
12 | 37513 |
13 | 98209 |
14 | 257114 |
15 | 673135 |
16 | 1762289 |
17 | 4613732 |
18 | 12078909 |
19 | 31622993 |
20 | 82790070 |
21 | 216747219 |
22 | 567451585 |
23 | 1485607536 |
24 | 3889371025 |
25 | 10182505537 |
26 | 26658145586 |
27 | 69791931223 |
28 | 182717648081 |
[1,1,2,7,17,44,117,305,798,2091,5473,14328,37513, 98209,257114,673135,1762289,4613732,12078909, 31622993,82790070,216747219,567451585,1485607536, 3889371025,10182505537,26658145586,69791931223, 182717648081] |