n | a(n) |
---|---|
1 | 2 |
2 | 3 |
3 | 6 |
4 | 18 |
5 | 54 |
6 | 189 |
7 | 700 |
8 | 2778 |
9 | 11486 |
10 | 49377 |
11 | 217936 |
12 | 984818 |
13 | 4533004 |
14 | 21198962 |
15 | 100471862 |
16 | 481754806 |
17 | 2333465628 |
18 | 11404047817 |
19 | 56177574628 |
20 | 278710061814 |
21 | 1391617108600 |
22 | 6988781174376 |
23 | 35283390923324 |
24 | 178990052273558 |
25 | 912019786448570 |
26 | 4665994686718118 |
[2,3,6,18,54,189,700,2778,11486,49377,217936, 984818,4533004,21198962,100471862,481754806, 2333465628,11404047817,56177574628,278710061814, 1391617108600,6988781174376,35283390923324, 178990052273558,912019786448570,4665994686718118] |