n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 13 |
3 | 37 |
4 | 217 |
5 | 841 |
6 | 4069 |
7 | 17389 |
8 | 79537 |
9 | 350353 |
10 | 1575613 |
11 | 7005109 |
12 | 31341961 |
13 | 139740121 |
14 | 624241813 |
15 | 2785624957 |
16 | 12437909857 |
17 | 55517694241 |
18 | 247852396909 |
19 | 1106399430469 |
20 | 4939175226937 |
21 | 22048744189033 |
22 | 98428415874373 |
23 | 439393017828109 |
24 | 1961498610274321 |
25 | 8756320416657841 |
[1,1,13,37,217,841,4069,17389,79537,350353, 1575613,7005109,31341961,139740121,624241813, 2785624957,12437909857,55517694241,247852396909, 1106399430469,4939175226937,22048744189033, 98428415874373,439393017828109,1961498610274321, 8756320416657841] |