n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 10 |
3 | 23 |
4 | 72 |
5 | 335 |
6 | 2220 |
7 | 19166 |
8 | 217862 |
9 | 3428059 |
10 | 71688050 |
11 | 1884401480 |
12 | 63363038340 |
13 | 2929516409504 |
14 | 178211319638172 |
15 | 13290584617658383 |
16 | 1240111930777216192 |
17 | 158642776309162956097 |
18 | 26642849845285577276244 |
19 | 5432337767302682299726906 |
[1,1,10,23,72,335,2220,19166,217862,3428059, 71688050,1884401480,63363038340,2929516409504, 178211319638172,13290584617658383, 1240111930777216192,158642776309162956097, 26642849845285577276244,5432337767302682299726906] |