n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 29 |
4 | 154 |
5 | 792 |
6 | 4047 |
7 | 20967 |
8 | 110058 |
9 | 582257 |
10 | 3096516 |
11 | 16539690 |
12 | 88684291 |
13 | 477080671 |
14 | 2573652045 |
15 | 13917256254 |
16 | 75417513498 |
17 | 409447753305 |
18 | 2226602481387 |
19 | 12126317466294 |
20 | 66129124080804 |
21 | 361059693982863 |
22 | 1973513103986606 |
23 | 10797777359289435 |
[1,2,6,29,154,792,4047,20967,110058,582257, 3096516,16539690,88684291,477080671,2573652045, 13917256254,75417513498,409447753305, 2226602481387,12126317466294,66129124080804, 361059693982863,1973513103986606, 10797777359289435] |