n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 7 |
3 | 57 |
4 | 455 |
5 | 3641 |
6 | 29127 |
7 | 233017 |
8 | 1864135 |
9 | 14913081 |
10 | 119304647 |
11 | 954437177 |
12 | 7635497415 |
13 | 61083979321 |
14 | 488671834567 |
15 | 3909374676537 |
16 | 31274997412295 |
17 | 250199979298361 |
18 | 2001599834386887 |
19 | 16012798675095097 |
20 | 128102389400760775 |
21 | 1024819115206086201 |
22 | 8198552921648689607 |
[0,1,7,57,455,3641,29127,233017,1864135,14913081, 119304647,954437177,7635497415,61083979321, 488671834567,3909374676537,31274997412295, 250199979298361,2001599834386887, 16012798675095097,128102389400760775, 1024819115206086201,8198552921648689607] |