n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 9 |
3 | 29 |
4 | 99 |
5 | 351 |
6 | 1275 |
7 | 4707 |
8 | 17577 |
9 | 66197 |
10 | 250953 |
11 | 956385 |
12 | 3660541 |
13 | 14061141 |
14 | 54177741 |
15 | 209295261 |
16 | 810375651 |
17 | 3143981871 |
18 | 12219117171 |
19 | 47564380971 |
20 | 185410909791 |
21 | 723668784231 |
22 | 2827767747951 |
23 | 11061198475551 |
24 | 43308802158651 |
[1,3,9,29,99,351,1275,4707,17577,66197,250953, 956385,3660541,14061141,54177741,209295261, 810375651,3143981871,12219117171,47564380971, 185410909791,723668784231,2827767747951, 11061198475551,43308802158651] |