n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 2 |
4 | 6 |
5 | 19 |
6 | 60 |
7 | 189 |
8 | 595 |
9 | 1873 |
10 | 5896 |
11 | 18560 |
12 | 58425 |
13 | 183916 |
14 | 578949 |
15 | 1822473 |
16 | 5736961 |
17 | 18059374 |
18 | 56849086 |
19 | 178955183 |
20 | 563332848 |
21 | 1773314929 |
22 | 5582216355 |
23 | 17572253481 |
24 | 55315679788 |
25 | 174128175064 |
26 | 548137914373 |
27 | 1725482812088 |
[1,1,2,6,19,60,189,595,1873,5896,18560,58425, 183916,578949,1822473,5736961,18059374,56849086, 178955183,563332848,1773314929,5582216355, 17572253481,55315679788,174128175064,548137914373, 1725482812088] |