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 | 31 |
| 2 | 227 |
| 3 | 1051 |
| 4 | 3109 |
| 5 | 7151 |
| 6 | 15511 |
| 7 | 18127 |
| 8 | 30367 |
| 9 | 32143 |
| 10 | 32687 |
| 11 | 144719 |
| 12 | 151051 |
| 13 | 165311 |
| 14 | 186343 |
| 15 | 234191 |
| 16 | 302399 |
| 17 | 369997 |
| 18 | 371281 |
| 19 | 374239 |
| 20 | 407503 |
| 21 | 454303 |
| 22 | 509263 |
| 23 | 531263 |
| 24 | 537743 |
| 25 | 759359 |
| 26 | 1053007 |
| 27 | 1088081 |
| 28 | 1182287 |
| 29 | 1185601 |
| 30 | 1354321 |
| 31 | 1381441 |