n | a(n) |
---|---|
1 | 3 |
2 | 120 |
3 | 310 |
4 | 1532 |
5 | 7196 |
6 | 32765 |
7 | 163682 |
8 | 791180 |
9 | 3881007 |
10 | 19185785 |
11 | 94442736 |
12 | 466918841 |
13 | 2307509126 |
14 | 11405401174 |
15 | 56404226833 |
16 | 278908057093 |
17 | 1379320204745 |
18 | 6821594426465 |
19 | 33736893175669 |
20 | 166853365413519 |
21 | 825211552764054 |
[3,120,310,1532,7196,32765,163682,791180,3881007, 19185785,94442736,466918841,2307509126, 11405401174,56404226833,278908057093, 1379320204745,6821594426465,33736893175669, 166853365413519,825211552764054] |