n | a(n) |
---|---|
1 | 1 |
2 | 15 |
3 | 55 |
4 | 5151 |
5 | 8515 |
6 | 581581 |
7 | 885115 |
8 | 1188111 |
9 | 11188815 |
10 | 51151555 |
11 | 81581151 |
12 | 88851115 |
13 | 851585815 |
14 | 8888511115 |
15 | 888885111115 |
16 | 88888851111115 |
17 | 8888888511111115 |
18 | 888888885111111115 |
19 | 5885188811851888815 |
20 | 15158585181118581555 |
21 | 88888888851111111115 |
[1,15,55,5151,8515,581581,885115,1188111,11188815, 51151555,81581151,88851115,851585815,8888511115, 888885111115,88888851111115,8888888511111115, 888888885111111115,5885188811851888815, 15158585181118581555,88888888851111111115] |