n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 8 |
4 | 25 |
5 | 85 |
6 | 318 |
7 | 1234 |
8 | 4884 |
9 | 19458 |
10 | 77727 |
11 | 310761 |
12 | 1242853 |
13 | 4971151 |
14 | 19884270 |
15 | 79536639 |
16 | 318145993 |
17 | 1272583241 |
18 | 5090332042 |
19 | 20361326983 |
20 | 81445306447 |
21 | 325781223902 |
22 | 1303124893253 |
23 | 5212499570050 |
24 | 20849998276525 |
25 | 83399993101506 |
26 | 333599972400353 |
[1,1,3,8,25,85,318,1234,4884,19458,77727,310761, 1242853,4971151,19884270,79536639,318145993, 1272583241,5090332042,20361326983,81445306447, 325781223902,1303124893253,5212499570050, 20849998276525,83399993101506,333599972400353] |