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) |
|---|---|
| 2 | 1 |
| 3 | 1 |
| 4 | 7 |
| 5 | 5 |
| 6 | 37 |
| 7 | 7 |
| 8 | 421 |
| 9 | 347 |
| 10 | 1177 |
| 11 | 671 |
| 12 | 14939 |
| 13 | 6617 |
| 14 | 135451 |
| 15 | 140311 |
| 16 | 271681 |
| 17 | 143327 |
| 18 | 5096503 |
| 19 | 751279 |
| 20 | 91610357 |
| 21 | 24080311 |
| 22 | 9098461 |
| 23 | 830139 |
| 24 | 2188298491 |
| 25 | 77709491 |
| 26 | 925316723 |
| 27 | 6609819823 |
| 28 | 3567606143 |
| 29 | 10876020307 |
| 30 | 123417992791 |
| 31 | 300151059037 |
| 32 | 37903472946337 |
| 33 | 32271030591223 |