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 | 1 |
| 3 | 7 |
| 4 | 9 |
| 5 | 39 |
| 6 | 42 |
| 7 | 126 |
| 8 | 130 |
| 9 | 310 |
| 10 | 315 |
| 11 | 645 |
| 12 | 651 |
| 13 | 1197 |
| 14 | 1204 |
| 15 | 2044 |
| 16 | 2052 |
| 17 | 3276 |
| 18 | 3285 |
| 19 | 4995 |
| 20 | 5005 |
| 21 | 7315 |
| 22 | 7326 |
| 23 | 10362 |
| 24 | 10374 |
| 25 | 14274 |
| 26 | 14287 |
| 27 | 19201 |
| 28 | 19215 |
| 29 | 25305 |
| 30 | 25320 |
| 31 | 32760 |
| 32 | 32776 |
| 33 | 41752 |
| 34 | 41769 |
| 35 | 52479 |
| 36 | 52497 |
| 37 | 65151 |
| 38 | 65170 |
| 39 | 79990 |
| 40 | 80010 |
| 41 | 97230 |
| 42 | 97251 |
| 43 | 117117 |