n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 12 |
4 | 54 |
5 | 259 |
6 | 1294 |
7 | 6655 |
8 | 34986 |
9 | 187149 |
10 | 1015407 |
11 | 5574829 |
12 | 30915904 |
13 | 172933249 |
14 | 974605751 |
15 | 5528804444 |
16 | 31546576802 |
17 | 180931023589 |
18 | 1042503934315 |
19 | 6031773336043 |
20 | 35030156585236 |
21 | 204135876541762 |
22 | 1193291688154639 |
[1,1,3,12,54,259,1294,6655,34986,187149,1015407, 5574829,30915904,172933249,974605751,5528804444, 31546576802,180931023589,1042503934315, 6031773336043,35030156585236,204135876541762, 1193291688154639] |