n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 9 |
3 | 55 |
4 | 417 |
5 | 4063 |
6 | 47089 |
7 | 638815 |
8 | 9893057 |
9 | 172430463 |
10 | 3338825169 |
11 | 71119417375 |
12 | 1652583598497 |
13 | 41600978876863 |
14 | 1127787743366449 |
15 | 32757802728304735 |
16 | 1014917534672868737 |
17 | 33409942701676459263 |
18 | 1164512820203174614929 |
19 | 42844385538424750452895 |
20 | 1659281060494160725575777 |
[1,3,9,55,417,4063,47089,638815,9893057,172430463, 3338825169,71119417375,1652583598497, 41600978876863,1127787743366449,32757802728304735, 1014917534672868737,33409942701676459263, 1164512820203174614929,42844385538424750452895, 1659281060494160725575777] |