n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 10 |
5 | 27 |
6 | 82 |
7 | 274 |
8 | 988 |
9 | 3880 |
10 | 16175 |
11 | 72205 |
12 | 340660 |
13 | 1697060 |
14 | 8906990 |
15 | 48911059 |
16 | 281486144 |
17 | 1687198848 |
18 | 10535484376 |
19 | 68349098640 |
20 | 459596780618 |
21 | 3202506672898 |
22 | 23052054364956 |
23 | 171418420964352 |
24 | 1314125642973640 |
25 | 10375794542251692 |
26 | 84315714183790792 |
[1,1,2,4,10,27,82,274,988,3880,16175,72205,340660, 1697060,8906990,48911059,281486144,1687198848, 10535484376,68349098640,459596780618, 3202506672898,23052054364956,171418420964352, 1314125642973640,10375794542251692, 84315714183790792] |