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 | 5 |
| 2 | 15 |
| 3 | 65 |
| 4 | 175 |
| 5 | 671 |
| 6 | 1105 |
| 7 | 2465 |
| 8 | 3439 |
| 9 | 6095 |
| 10 | 12209 |
| 11 | 14911 |
| 12 | 25345 |
| 13 | 34481 |
| 14 | 39775 |
| 15 | 51935 |
| 16 | 74465 |
| 17 | 102719 |
| 18 | 113521 |
| 19 | 150415 |
| 20 | 178991 |
| 21 | 194545 |
| 22 | 246559 |
| 23 | 285935 |
| 24 | 352529 |
| 25 | 456385 |
| 26 | 515201 |
| 27 | 546415 |
| 28 | 612575 |
| 29 | 647569 |
| 30 | 721505 |
| 31 | 1024255 |
| 32 | 1124111 |
| 33 | 1285745 |