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 | 10 |
| 2 | 100 |
| 3 | 868 |
| 4 | 7378 |
| 5 | 62764 |
| 6 | 534352 |
| 7 | 4549684 |
| 8 | 38737252 |
| 9 | 329817976 |
| 10 | 2808146488 |
| 11 | 23909211472 |
| 12 | 203568584872 |
| 13 | 1733230255168 |
| 14 | 14757125302768 |
| 15 | 125645595288400 |
| 16 | 1069775806044208 |
| 17 | 9108319894356832 |
| 18 | 77550352914336256 |
| 19 | 660281732184575104 |