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 | 1 |
| 2 | 3 |
| 3 | 4 |
| 4 | 9 |
| 5 | 12 |
| 6 | 21 |
| 7 | 29 |
| 8 | 48 |
| 9 | 64 |
| 10 | 99 |
| 11 | 132 |
| 12 | 195 |
| 13 | 257 |
| 14 | 366 |
| 15 | 480 |
| 16 | 666 |
| 17 | 864 |
| 18 | 1173 |
| 19 | 1511 |
| 20 | 2016 |
| 21 | 2576 |
| 22 | 3384 |
| 23 | 4296 |
| 24 | 5574 |
| 25 | 7027 |
| 26 | 9015 |
| 27 | 11296 |
| 28 | 14355 |
| 29 | 17880 |
| 30 | 22527 |
| 31 | 27908 |
| 32 | 34896 |
| 33 | 43008 |
| 34 | 53406 |
| 35 | 65508 |
| 36 | 80844 |
| 37 | 98711 |
| 38 | 121128 |
| 39 | 147272 |
| 40 | 179784 |
| 41 | 217704 |
| 42 | 264489 |
| 43 | 319064 |