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 | 8 |
| 1 | 58 |
| 2 | 344 |
| 3 | 1918 |
| 4 | 10415 |
| 5 | 55837 |
| 6 | 297374 |
| 7 | 1578160 |
| 8 | 8359845 |
| 9 | 44244825 |
| 10 | 234094080 |
| 11 | 1238598580 |
| 12 | 6555004313 |
| 13 | 34703385031 |
| 14 | 183805639190 |
| 15 | 973982775784 |
| 16 | 5163655102685 |
| 17 | 27389161216395 |
| 18 | 145349642782140 |
| 19 | 771718011707550 |