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 | 241 |
| 3 | 661 |
| 4 | 1291 |
| 5 | 2131 |
| 6 | 2341 |
| 7 | 2551 |
| 8 | 2971 |
| 9 | 3181 |
| 10 | 3391 |
| 11 | 4021 |
| 12 | 4231 |
| 13 | 4441 |
| 14 | 4651 |
| 15 | 4861 |
| 16 | 5281 |
| 17 | 5701 |
| 18 | 6121 |
| 19 | 6961 |
| 20 | 7591 |
| 21 | 8011 |
| 22 | 8221 |
| 23 | 8431 |
| 24 | 8641 |
| 25 | 9901 |
| 26 | 10111 |
| 27 | 10321 |
| 28 | 10531 |
| 29 | 11161 |
| 30 | 12211 |
| 31 | 12421 |
| 32 | 12841 |
| 33 | 13681 |
| 34 | 14731 |
| 35 | 15361 |
| 36 | 15991 |
| 37 | 16411 |
| 38 | 16831 |
| 39 | 17041 |