This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 11 |
| 3 | 16 |
| 4 | 135 |
| 5 | 135 |
| 6 | 923 |
| 7 | 6083 |
| 8 | 71663 |
| 9 | 423959 |
| 10 | 3995879 |
| 11 | 43216583 |
| 12 | 489118019 |
| 13 | 6233987183 |
| 14 | 87199150463 |
| 15 | 1310334397523 |
| 16 | 20937254735843 |
| 17 | 355693511854763 |