n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 3 |
4 | 11 |
5 | 60 |
6 | 423 |
7 | 3381 |
8 | 29335 |
9 | 266703 |
10 | 2507232 |
11 | 24177705 |
12 | 238003111 |
13 | 2383370158 |
14 | 24217426745 |
15 | 249182213284 |
16 | 2592138293117 |
17 | 27225668134063 |
18 | 288405507217589 |
19 | 3078471666603235 |
20 | 33085393411436772 |
21 | 357782389095170193 |
22 | 3890765813426578535 |
23 | 42527471172438573757 |
[1,1,1,3,11,60,423,3381,29335,266703,2507232, 24177705,238003111,2383370158,24217426745, 249182213284,2592138293117,27225668134063, 288405507217589,3078471666603235, 33085393411436772,357782389095170193, 3890765813426578535,42527471172438573757] |