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 | 2 |
| 2 | 22 |
| 3 | 332 |
| 4 | 4642 |
| 5 | 61052 |
| 6 | 771562 |
| 7 | 9487172 |
| 8 | 114358882 |
| 9 | 1357947692 |
| 10 | 15937424602 |
| 11 | 185311670612 |
| 12 | 2138428376722 |
| 13 | 24522712143932 |
| 14 | 279749833583242 |
| 15 | 3177248169415652 |
| 16 | 35949729863572162 |
| 17 | 405447028499293772 |