n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 16 |
3 | 51 |
4 | 1138 |
5 | 3465 |
6 | 18463 |
7 | 58854 |
8 | 1313251 |
9 | 3998607 |
10 | 21306286 |
11 | 67917465 |
12 | 1515490516 |
13 | 4614389013 |
14 | 24587435581 |
15 | 78376695756 |
16 | 1748874742213 |
17 | 5325000922395 |
18 | 28373879354188 |
19 | 90446638984959 |
20 | 2018199937023286 |
21 | 6145046450054817 |
22 | 32743432187297371 |
23 | 104375343011946930 |
[1,3,16,51,1138,3465,18463,58854,1313251,3998607, 21306286,67917465,1515490516,4614389013, 24587435581,78376695756,1748874742213, 5325000922395,28373879354188,90446638984959, 2018199937023286,6145046450054817, 32743432187297371,104375343011946930] |