n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 7 |
4 | 25 |
5 | 81 |
6 | 331 |
7 | 1303 |
8 | 5937 |
9 | 26785 |
10 | 133651 |
11 | 669351 |
12 | 3609673 |
13 | 19674097 |
14 | 113525595 |
15 | 664400311 |
16 | 4070168161 |
17 | 25330978113 |
18 | 163716695587 |
19 | 1075631907655 |
20 | 7296866339961 |
21 | 50322142646161 |
22 | 356790528924523 |
23 | 2570964805355607 |
24 | 18983329135883665 |
25 | 142389639792952801 |
26 | 1091556096587136051 |
[1,1,3,7,25,81,331,1303,5937,26785,133651,669351, 3609673,19674097,113525595,664400311,4070168161, 25330978113,163716695587,1075631907655, 7296866339961,50322142646161,356790528924523, 2570964805355607,18983329135883665, 142389639792952801,1091556096587136051] |