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 | 13 |
| 2 | 63 |
| 3 | 183 |
| 4 | 401 |
| 5 | 745 |
| 6 | 1291 |
| 7 | 2019 |
| 8 | 2921 |
| 9 | 4133 |
| 10 | 5659 |
| 11 | 7443 |
| 12 | 9597 |
| 13 | 12149 |
| 14 | 15103 |
| 15 | 18535 |
| 16 | 22389 |
| 17 | 26729 |
| 18 | 31727 |
| 19 | 37231 |
| 20 | 43233 |
| 21 | 50001 |
| 22 | 57443 |
| 23 | 65467 |
| 24 | 74281 |
| 25 | 83853 |
| 26 | 94187 |
| 27 | 105419 |
| 28 | 117397 |
| 29 | 130221 |
| 30 | 144159 |
| 31 | 158927 |
| 32 | 174517 |
| 33 | 191329 |
| 34 | 209175 |
| 35 | 227927 |
| 36 | 247889 |
| 37 | 268969 |
| 38 | 291171 |
| 39 | 314691 |