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 | 0 |
| 1 | 5 |
| 2 | 62 |
| 3 | 363 |
| 4 | 1364 |
| 5 | 3905 |
| 6 | 9330 |
| 7 | 19607 |
| 8 | 37448 |
| 9 | 66429 |
| 10 | 111110 |
| 11 | 177155 |
| 12 | 271452 |
| 13 | 402233 |
| 14 | 579194 |
| 15 | 813615 |
| 16 | 1118480 |
| 17 | 1508597 |
| 18 | 2000718 |
| 19 | 2613659 |
| 20 | 3368420 |
| 21 | 4288305 |
| 22 | 5399042 |
| 23 | 6728903 |
| 24 | 8308824 |
| 25 | 10172525 |
| 26 | 12356630 |
| 27 | 14900787 |
| 28 | 17847788 |
| 29 | 21243689 |
| 30 | 25137930 |
| 31 | 29583455 |