n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 22 |
3 | 131 |
4 | 823 |
5 | 5096 |
6 | 31687 |
7 | 196785 |
8 | 1222550 |
9 | 7594361 |
10 | 47177097 |
11 | 293066688 |
12 | 1820552297 |
13 | 11309395995 |
14 | 70254767718 |
15 | 436427542283 |
16 | 2711118571311 |
17 | 16841658983944 |
18 | 104621568809247 |
19 | 649916534985369 |
20 | 4037327172325542 |
[1,3,22,131,823,5096,31687,196785,1222550,7594361, 47177097,293066688,1820552297,11309395995, 70254767718,436427542283,2711118571311, 16841658983944,104621568809247,649916534985369, 4037327172325542] |