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 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 9 |
| 5 | 15 |
| 6 | 18 |
| 7 | 21 |
| 8 | 27 |
| 9 | 72 |
| 10 | 81 |
| 11 | 234 |
| 12 | 462 |
| 13 | 502 |
| 14 | 522 |
| 15 | 1314 |
| 16 | 1323 |
| 17 | 3789 |
| 18 | 3897 |
| 19 | 6462 |
| 20 | 10470 |
| 21 | 17532 |
| 22 | 17820 |
| 23 | 28503 |
| 24 | 48248 |
| 25 | 48254 |
| 26 | 48303 |
| 27 | 48644 |
| 28 | 48856 |
| 29 | 223551 |
| 30 | 226149 |
| 31 | 227406 |
| 32 | 625986 |
| 33 | 4838918 |
| 34 | 4848004 |