n | a(n) |
---|---|
1 | 2 |
2 | 3 |
3 | 5 |
4 | 11 |
5 | 23 |
6 | 63 |
7 | 153 |
8 | 489 |
9 | 1329 |
10 | 4785 |
11 | 14235 |
12 | 56475 |
13 | 181215 |
14 | 780255 |
15 | 2672145 |
16 | 12348945 |
17 | 44781345 |
18 | 220253985 |
19 | 840523635 |
20 | 4370620275 |
21 | 17465201775 |
22 | 95498916975 |
23 | 397983749625 |
24 | 2278224696825 |
25 | 9867844134225 |
26 | 58917607974225 |
[2,3,5,11,23,63,153,489,1329,4785,14235,56475, 181215,780255,2672145,12348945,44781345,220253985, 840523635,4370620275,17465201775,95498916975, 397983749625,2278224696825,9867844134225, 58917607974225] |