n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 19 |
4 | 194 |
5 | 3144 |
6 | 65548 |
7 | 1272696 |
8 | 21855504 |
9 | 328629713 |
10 | 4362818853 |
11 | 51658865022 |
12 | 551021529952 |
13 | 5342121192394 |
14 | 47446872310092 |
15 | 388746259849648 |
16 | 2956322263908194 |
17 | 20980847841062062 |
18 | 139630332607991630 |
19 | 875184633222730558 |
20 | 5186438905325403553 |
[1,1,4,19,194,3144,65548,1272696,21855504, 328629713,4362818853,51658865022,551021529952, 5342121192394,47446872310092,388746259849648, 2956322263908194,20980847841062062, 139630332607991630,875184633222730558, 5186438905325403553] |