n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 19 |
3 | 109 |
4 | 739 |
5 | 5779 |
6 | 51139 |
7 | 504739 |
8 | 5494339 |
9 | 65369539 |
10 | 843747139 |
11 | 11741033539 |
12 | 175200329539 |
13 | 2790549065539 |
14 | 47251477577539 |
15 | 847548190793539 |
16 | 16053185741897539 |
17 | 320165936763977539 |
18 | 6706533708227657539 |
19 | 147206624680428617539 |
20 | 3378708717041050697539 |
[1,4,19,109,739,5779,51139,504739,5494339, 65369539,843747139,11741033539,175200329539, 2790549065539,47251477577539,847548190793539, 16053185741897539,320165936763977539, 6706533708227657539,147206624680428617539, 3378708717041050697539] |