n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 9 |
3 | 20 |
4 | 889 |
5 | 1798 |
6 | 8081 |
7 | 17960 |
8 | 798321 |
9 | 1614602 |
10 | 7256729 |
11 | 16128060 |
12 | 716891369 |
13 | 1449910798 |
14 | 6516534561 |
15 | 14482979920 |
16 | 643767651041 |
17 | 1302018282002 |
18 | 5851840779049 |
19 | 13005699840100 |
20 | 578102633743449 |
21 | 1169210967326998 |
22 | 5254946503051441 |
23 | 11679103973429880 |
[1,2,9,20,889,1798,8081,17960,798321,1614602, 7256729,16128060,716891369,1449910798,6516534561, 14482979920,643767651041,1302018282002, 5851840779049,13005699840100,578102633743449, 1169210967326998,5254946503051441, 11679103973429880] |