n | a(n) |
---|---|
1 | 216 |
2 | 986 |
3 | 4368 |
4 | 19446 |
5 | 79200 |
6 | 311498 |
7 | 1219944 |
8 | 4617079 |
9 | 17036428 |
10 | 62297886 |
11 | 224152970 |
12 | 793463094 |
13 | 2782588100 |
14 | 9662944274 |
15 | 33203799944 |
16 | 113195928313 |
17 | 383180556700 |
18 | 1287749650878 |
19 | 4300782679270 |
20 | 14285051453226 |
21 | 47196108008844 |
[216,986,4368,19446,79200,311498,1219944,4617079, 17036428,62297886,224152970,793463094,2782588100, 9662944274,33203799944,113195928313,383180556700, 1287749650878,4300782679270,14285051453226, 47196108008844] |