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 | 6 |
| 4 | 21 |
| 5 | 3 |
| 6 | 27 |
| 7 | 9 |
| 8 | 9 |
| 9 | 88263 |
| 10 | 9 |
| 11 | 99 |
| 12 | 594 |
| 13 | 198 |
| 14 | 99 |
| 15 | 99 |
| 16 | 99 |
| 17 | 99 |
| 18 | 99 |
| 19 | 99 |
| 20 | 9009 |
| 21 | 99 |
| 22 | 99 |
| 23 | 198 |
| 24 | 99 |
| 25 | 99 |
| 26 | 297 |
| 27 | 1089 |
| 28 | 99 |
| 29 | 198 |
| 30 | 198 |
| 31 | 594 |
| 32 | 198 |
| 33 | 396 |
| 34 | 693 |
| 35 | 99 |
| 36 | 99 |
| 37 | 99 |
| 38 | 297 |
| 39 | 594 |
| 40 | 99 |
| 41 | 99 |
| 42 | 99 |
| 43 | 198 |
| 44 | 99 |
| 45 | 99 |
| 46 | 99 |
| 47 | 99 |
| 48 | 99 |
| 49 | 99 |
| 50 | 99 |
| 51 | 99 |
| 52 | 396 |
| 53 | 2772 |
| 54 | 99 |
| 55 | 99 |
| 56 | 99 |
| 57 | 396 |
| 58 | 693 |
| 59 | 693 |
| 60 | 99 |
| 61 | 99 |
| 62 | 99 |
| 63 | 99 |