n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 3 |
4 | 7 |
5 | 16 |
6 | 43 |
7 | 115 |
8 | 303 |
9 | 813 |
10 | 2203 |
11 | 5991 |
12 | 16371 |
13 | 44917 |
14 | 123598 |
15 | 340988 |
16 | 942930 |
17 | 2612735 |
18 | 7252407 |
19 | 20163046 |
20 | 56136326 |
21 | 156488946 |
22 | 436739752 |
23 | 1220157514 |
24 | 3412116339 |
25 | 9550192161 |
26 | 26751643663 |
27 | 74991516850 |
28 | 210364915858 |
29 | 590490257667 |
30 | 1658484275955 |
[1,1,1,3,7,16,43,115,303,813,2203,5991,16371, 44917,123598,340988,942930,2612735,7252407, 20163046,56136326,156488946,436739752,1220157514, 3412116339,9550192161,26751643663,74991516850, 210364915858,590490257667,1658484275955] |