n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 1 |
4 | 2 |
5 | 17 |
6 | 82 |
7 | 257 |
8 | 690 |
9 | 3484 |
10 | 26978 |
11 | 160347 |
12 | 726085 |
13 | 3529206 |
14 | 26885924 |
15 | 220706533 |
16 | 1474182023 |
17 | 8834370165 |
18 | 65392181686 |
19 | 604821608674 |
20 | 5230627589958 |
21 | 39543579302104 |
22 | 312733691925723 |
23 | 3013530105191283 |
24 | 30474809255061289 |
[1,1,1,1,2,17,82,257,690,3484,26978,160347,726085, 3529206,26885924,220706533,1474182023,8834370165, 65392181686,604821608674,5230627589958, 39543579302104,312733691925723,3013530105191283, 30474809255061289] |