n | a(n) |
---|---|
1 | 3 |
2 | 30 |
3 | 206 |
4 | 1570 |
5 | 11541 |
6 | 85932 |
7 | 636912 |
8 | 4728287 |
9 | 35081894 |
10 | 260344178 |
11 | 1931891935 |
12 | 14336007171 |
13 | 106382441959 |
14 | 789428803920 |
15 | 5858083254752 |
16 | 43470863287881 |
17 | 322582598884187 |
18 | 2393776652484473 |
19 | 17763408799398613 |
20 | 131816263437678307 |
[3,30,206,1570,11541,85932,636912,4728287, 35081894,260344178,1931891935,14336007171, 106382441959,789428803920,5858083254752, 43470863287881,322582598884187,2393776652484473, 17763408799398613,131816263437678307] |