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 | 2 |
| 2 | 11 |
| 3 | 106 |
| 4 | 1277 |
| 5 | 18746 |
| 6 | 326587 |
| 7 | 6588338 |
| 8 | 150994937 |
| 9 | 3874204882 |
| 10 | 109999999991 |
| 11 | 3423740047322 |
| 12 | 115909305827317 |
| 13 | 4240251492291530 |
| 14 | 166680102383370227 |
| 15 | 7006302246093749986 |
| 16 | 313594649253062377457 |
| 17 | 14890324713954061755170 |
| 18 | 747581753430634213933039 |
| 19 | 39568393113206271782479562 |