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 | 1 |
| 3 | 1 |
| 4 | 13 |
| 5 | 1 |
| 6 | 1 |
| 7 | 41 |
| 8 | 41 |
| 9 | 1 |
| 10 | 1 |
| 11 | 85 |
| 12 | 321 |
| 13 | 85 |
| 14 | 1 |
| 15 | 1 |
| 16 | 145 |
| 17 | 1289 |
| 18 | 1289 |
| 19 | 145 |
| 20 | 1 |
| 21 | 1 |
| 22 | 221 |
| 23 | 3649 |
| 24 | 8989 |
| 25 | 3649 |
| 26 | 221 |
| 27 | 1 |
| 28 | 1 |
| 29 | 313 |
| 30 | 8361 |
| 31 | 40081 |
| 32 | 40081 |
| 33 | 8361 |
| 34 | 313 |
| 35 | 1 |
| 36 | 1 |
| 37 | 421 |
| 38 | 16641 |
| 39 | 134245 |
| 40 | 265729 |
| 41 | 134245 |
| 42 | 16641 |
| 43 | 421 |
| 44 | 1 |
| 45 | 1 |
| 46 | 545 |
| 47 | 29961 |
| 48 | 369305 |
| 49 | 1256465 |
| 50 | 1256465 |
| 51 | 369305 |
| 52 | 29961 |
| 53 | 545 |
| 54 | 1 |