n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 19 |
3 | 252 |
4 | 3885 |
5 | 65274 |
6 | 1159587 |
7 | 21421248 |
8 | 407337153 |
9 | 7920326700 |
10 | 156753610013 |
11 | 3147328992080 |
12 | 63951322669065 |
13 | 1312575792628356 |
14 | 27172514322677625 |
15 | 566707337222428800 |
16 | 11896007334177739113 |
17 | 251142622845893276190 |
18 | 5328891499524964282170 |
[1,2,19,252,3885,65274,1159587,21421248,407337153, 7920326700,156753610013,3147328992080, 63951322669065,1312575792628356,27172514322677625, 566707337222428800,11896007334177739113, 251142622845893276190,5328891499524964282170] |