n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 12 |
4 | 54 |
5 | 261 |
6 | 1324 |
7 | 6954 |
8 | 37493 |
9 | 206316 |
10 | 1154050 |
11 | 6542485 |
12 | 37507919 |
13 | 217081155 |
14 | 1266646114 |
15 | 7443100944 |
16 | 44008522719 |
17 | 261631301144 |
18 | 1562969609155 |
19 | 9377744249277 |
20 | 56486588669929 |
21 | 341452466500382 |
22 | 2070684006442310 |
23 | 12594325039504367 |
24 | 76808163066135791 |
[1,1,3,12,54,261,1324,6954,37493,206316,1154050, 6542485,37507919,217081155,1266646114,7443100944, 44008522719,261631301144,1562969609155, 9377744249277,56486588669929,341452466500382, 2070684006442310,12594325039504367, 76808163066135791] |