n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 19 |
4 | 60 |
5 | 189 |
6 | 595 |
7 | 1873 |
8 | 5896 |
9 | 18560 |
10 | 58425 |
11 | 183916 |
12 | 578949 |
13 | 1822473 |
14 | 5736961 |
15 | 18059374 |
16 | 56849086 |
17 | 178955183 |
18 | 563332848 |
19 | 1773314929 |
20 | 5582216355 |
21 | 17572253481 |
22 | 55315679788 |
23 | 174128175064 |
24 | 548137914373 |
25 | 1725482812088 |
[1,2,6,19,60,189,595,1873,5896,18560,58425,183916, 578949,1822473,5736961,18059374,56849086, 178955183,563332848,1773314929,5582216355, 17572253481,55315679788,174128175064,548137914373, 1725482812088] |