n | a(n) |
---|---|
1 | 2 |
2 | 12 |
3 | 52 |
4 | 212 |
5 | 852 |
6 | 3412 |
7 | 13652 |
8 | 54612 |
9 | 218452 |
10 | 873812 |
11 | 3495252 |
12 | 13981012 |
13 | 55924052 |
14 | 223696212 |
15 | 894784852 |
16 | 3579139412 |
17 | 14316557652 |
18 | 57266230612 |
19 | 229064922452 |
20 | 916259689812 |
21 | 3665038759252 |
22 | 14660155037012 |
23 | 58640620148052 |
24 | 234562480592212 |
25 | 938249922368852 |
[2,12,52,212,852,3412,13652,54612,218452,873812, 3495252,13981012,55924052,223696212,894784852, 3579139412,14316557652,57266230612,229064922452, 916259689812,3665038759252,14660155037012, 58640620148052,234562480592212,938249922368852] |