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 | 3 |
| 2 | 9 |
| 3 | 22 |
| 4 | 45 |
| 5 | 81 |
| 6 | 133 |
| 7 | 204 |
| 8 | 297 |
| 9 | 415 |
| 10 | 561 |
| 11 | 738 |
| 12 | 949 |
| 13 | 1197 |
| 14 | 1485 |
| 15 | 1816 |
| 16 | 2193 |
| 17 | 2619 |
| 18 | 3097 |
| 19 | 3630 |
| 20 | 4221 |
| 21 | 4873 |
| 22 | 5589 |
| 23 | 6372 |
| 24 | 7225 |
| 25 | 8151 |
| 26 | 9153 |
| 27 | 10234 |
| 28 | 11397 |
| 29 | 12645 |
| 30 | 13981 |
| 31 | 15408 |
| 32 | 16929 |
| 33 | 18547 |
| 34 | 20265 |
| 35 | 22086 |
| 36 | 24013 |
| 37 | 26049 |
| 38 | 28197 |
| 39 | 30460 |
| 40 | 32841 |
| 41 | 35343 |
| 42 | 37969 |
| 43 | 40722 |