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 | 3 |
| 2 | 7 |
| 3 | 59 |
| 4 | 197 |
| 5 | 373 |
| 6 | 701 |
| 7 | 1009 |
| 8 | 1571 |
| 9 | 2749 |
| 10 | 3581 |
| 11 | 5701 |
| 12 | 5881 |
| 13 | 6247 |
| 14 | 8269 |
| 15 | 9397 |
| 16 | 14369 |
| 17 | 15881 |
| 18 | 31019 |
| 19 | 32707 |
| 20 | 41801 |
| 21 | 47269 |
| 22 | 53633 |
| 23 | 70177 |
| 24 | 81931 |
| 25 | 84701 |
| 26 | 93239 |
| 27 | 118369 |
| 28 | 131213 |
| 29 | 133873 |
| 30 | 138373 |
| 31 | 147661 |
| 32 | 149561 |
| 33 | 161159 |
| 34 | 191929 |
| 35 | 194069 |
| 36 | 203857 |
| 37 | 221813 |
| 38 | 252823 |
| 39 | 290161 |
| 40 | 298201 |