n | a(n) |
---|---|
0 | 1 |
1 | 12 |
2 | 99 |
3 | 686 |
4 | 4305 |
5 | 25368 |
6 | 143263 |
7 | 785202 |
8 | 4211229 |
9 | 22226204 |
10 | 115899147 |
11 | 598832598 |
12 | 3072304873 |
13 | 15676477920 |
14 | 79649367351 |
15 | 403336249274 |
16 | 2037103422837 |
17 | 10267399442916 |
18 | 51665107485475 |
[1,12,99,686,4305,25368,143263,785202,4211229, 22226204,115899147,598832598,3072304873, 15676477920,79649367351,403336249274, 2037103422837,10267399442916,51665107485475] |