n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 2 |
5 | 9 |
6 | 43 |
7 | 185 |
8 | 732 |
9 | 2737 |
10 | 9845 |
11 | 34449 |
12 | 118102 |
13 | 398585 |
14 | 1328607 |
15 | 4384393 |
16 | 14348912 |
17 | 46633953 |
18 | 150663529 |
19 | 484275617 |
20 | 1549681962 |
21 | 4939611241 |
22 | 15690529811 |
23 | 49686677721 |
24 | 156905298052 |
25 | 494251688849 |
[1,1,1,2,9,43,185,732,2737,9845,34449,118102, 398585,1328607,4384393,14348912,46633953, 150663529,484275617,1549681962,4939611241, 15690529811,49686677721,156905298052,494251688849] |