n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 10 |
4 | 53 |
5 | 265 |
6 | 1700 |
7 | 13097 |
8 | 96796 |
9 | 829080 |
10 | 8009815 |
11 | 75604892 |
12 | 808861988 |
13 | 9175286549 |
14 | 106167118057 |
15 | 1320388106466 |
16 | 16950041305210 |
17 | 233232366601078 |
18 | 3243603207488124 |
19 | 47776065074368313 |
20 | 733990397879859192 |
21 | 11515503147927664816 |
22 | 189107783918416912912 |
[1,1,3,10,53,265,1700,13097,96796,829080,8009815, 75604892,808861988,9175286549,106167118057, 1320388106466,16950041305210,233232366601078, 3243603207488124,47776065074368313, 733990397879859192,11515503147927664816, 189107783918416912912] |