n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 9 |
3 | 49 |
4 | 283 |
5 | 1715 |
6 | 10793 |
7 | 69906 |
8 | 463031 |
9 | 3122264 |
10 | 21363065 |
11 | 147951489 |
12 | 1035173405 |
13 | 7306326465 |
14 | 51959150713 |
15 | 371950057003 |
16 | 2678083379707 |
17 | 19381867703946 |
18 | 140915907625531 |
19 | 1028760981192771 |
20 | 7538511404971231 |
21 | 55427326349613665 |
22 | 408789584900354397 |
[1,2,9,49,283,1715,10793,69906,463031,3122264, 21363065,147951489,1035173405,7306326465, 51959150713,371950057003,2678083379707, 19381867703946,140915907625531,1028760981192771, 7538511404971231,55427326349613665, 408789584900354397] |