n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 4 |
3 | 9 |
4 | 24 |
5 | 77 |
6 | 294 |
7 | 1309 |
8 | 6664 |
9 | 38177 |
10 | 243034 |
11 | 1701909 |
12 | 13001604 |
13 | 107601977 |
14 | 959021574 |
15 | 9157981309 |
16 | 93282431344 |
17 | 1009552482977 |
18 | 11568619292914 |
19 | 139931423833509 |
20 | 1781662223749884 |
21 | 23819069385695177 |
22 | 333601191667149054 |
23 | 4884673638115922509 |
[1,2,4,9,24,77,294,1309,6664,38177,243034,1701909, 13001604,107601977,959021574,9157981309, 93282431344,1009552482977,11568619292914, 139931423833509,1781662223749884, 23819069385695177,333601191667149054, 4884673638115922509] |