n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 18 |
3 | 266 |
4 | 5506 |
5 | 146602 |
6 | 4772162 |
7 | 183618794 |
8 | 8152995138 |
9 | 410307648938 |
10 | 23079780216386 |
11 | 1434953808618090 |
12 | 97716253164212034 |
13 | 7233006174407149866 |
14 | 578233606405444793410 |
15 | 49651123488091636885994 |
16 | 4557474786380802233761090 |
17 | 445324385454834015896585386 |
[1,2,18,266,5506,146602,4772162,183618794, 8152995138,410307648938,23079780216386, 1434953808618090,97716253164212034, 7233006174407149866,578233606405444793410, 49651123488091636885994,4557474786380802233761090, 445324385454834015896585386] |