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 | 56 |
| 3 | 497 |
| 4 | 4809 |
| 5 | 50134 |
| 6 | 558215 |
| 7 | 6593839 |
| 8 | 82187658 |
| 9 | 1076193867 |
| 10 | 14749823893 |
| 11 | 210926792244 |
| 12 | 3138696242941 |
| 13 | 48485723853763 |
| 14 | 775929767223352 |
| 15 | 12840232627455485 |
| 16 | 219355194338036309 |
| 17 | 3862794707291567670 |