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 | 2 |
| 3 | 6 |
| 4 | 9 |
| 5 | 12 |
| 6 | 13 |
| 7 | 22 |
| 8 | 31 |
| 9 | 32 |
| 10 | 50 |
| 11 | 73 |
| 12 | 78 |
| 13 | 123 |
| 14 | 136 |
| 15 | 147 |
| 16 | 232 |
| 17 | 248 |
| 18 | 306 |
| 19 | 323 |
| 20 | 356 |
| 21 | 396 |
| 22 | 403 |
| 23 | 435 |
| 24 | 575 |
| 25 | 684 |
| 26 | 723 |
| 27 | 802 |
| 28 | 808 |
| 29 | 909 |
| 30 | 962 |
| 31 | 1165 |
| 32 | 1684 |
| 33 | 1820 |
| 34 | 2051 |
| 35 | 2202 |
| 36 | 2219 |
| 37 | 2683 |
| 38 | 2746 |
| 39 | 3580 |
| 40 | 4109 |
| 41 | 4158 |
| 42 | 4450 |
| 43 | 4770 |