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) |
|---|---|
| 0 | 1 |
| 1 | 7 |
| 2 | 78 |
| 3 | 969 |
| 4 | 12650 |
| 5 | 169911 |
| 6 | 2324784 |
| 7 | 32224114 |
| 8 | 450978066 |
| 9 | 6358402050 |
| 10 | 90177170226 |
| 11 | 1285063345176 |
| 12 | 18385569737808 |
| 13 | 263926640438545 |
| 14 | 3799541229226200 |
| 15 | 54834293825867556 |
| 16 | 793067310934426018 |