n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | 55 |
4 | 1368 |
5 | 34442 |
6 | 868994 |
7 | 21916090 |
8 | 552801398 |
9 | 13943026782 |
10 | 351682327314 |
11 | 8870382111250 |
12 | 223735362633678 |
13 | 5643217340398022 |
14 | 142337380859578634 |
15 | 3590138049351706810 |
16 | 90553101869397071558 |
17 | 2283996915742293943662 |
[1,4,55,1368,34442,868994,21916090,552801398, 13943026782,351682327314,8870382111250, 223735362633678,5643217340398022, 142337380859578634,3590138049351706810, 90553101869397071558,2283996915742293943662] |