n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 2 |
4 | 5 |
5 | 11 |
6 | 31 |
7 | 106 |
8 | 337 |
9 | 1205 |
10 | 5021 |
11 | 20186 |
12 | 86461 |
13 | 417847 |
14 | 1992355 |
15 | 9860306 |
16 | 53734241 |
17 | 292816841 |
18 | 1633818457 |
19 | 9855157330 |
20 | 59926837141 |
21 | 370352343971 |
22 | 2439935383271 |
23 | 16283034762842 |
24 | 109982177787505 |
25 | 783404343570301 |
26 | 5668314772422901 |
27 | 41412522553362026 |
[1,1,1,2,5,11,31,106,337,1205,5021,20186,86461, 417847,1992355,9860306,53734241,292816841, 1633818457,9855157330,59926837141,370352343971, 2439935383271,16283034762842,109982177787505, 783404343570301,5668314772422901, 41412522553362026] |