n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 10 |
3 | 68 |
4 | 618 |
5 | 6352 |
6 | 71188 |
7 | 841332 |
8 | 10352618 |
9 | 131328068 |
10 | 1706742160 |
11 | 22619741212 |
12 | 304685855700 |
13 | 4160480013848 |
14 | 57476485976388 |
15 | 802048167035968 |
16 | 11290551106506218 |
17 | 160168176177137896 |
18 | 2287724464324213972 |
[1,2,10,68,618,6352,71188,841332,10352618, 131328068,1706742160,22619741212,304685855700, 4160480013848,57476485976388,802048167035968, 11290551106506218,160168176177137896, 2287724464324213972] |