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) |
|---|---|
| 1 | 0 |
| 2 | 4 |
| 3 | 9 |
| 4 | 18 |
| 5 | 30 |
| 6 | 47 |
| 7 | 68 |
| 8 | 97 |
| 9 | 129 |
| 10 | 168 |
| 11 | 217 |
| 12 | 269 |
| 13 | 327 |
| 14 | 400 |
| 15 | 476 |
| 16 | 564 |
| 17 | 656 |
| 18 | 765 |
| 19 | 882 |
| 20 | 1007 |
| 21 | 1147 |
| 22 | 1298 |
| 23 | 1457 |
| 24 | 1633 |
| 25 | 1821 |
| 26 | 2020 |
| 27 | 2227 |
| 28 | 2460 |
| 29 | 2707 |
| 30 | 2961 |
| 31 | 3228 |
| 32 | 3512 |
| 33 | 3817 |
| 34 | 4137 |
| 35 | 4483 |
| 36 | 4821 |
| 37 | 5194 |
| 38 | 5579 |
| 39 | 5995 |
| 40 | 6413 |
| 41 | 6850 |
| 42 | 7308 |
| 43 | 7789 |
| 44 | 8293 |