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 | 1 |
| 2 | 19 |
| 3 | 85 |
| 4 | 231 |
| 5 | 489 |
| 6 | 891 |
| 7 | 1469 |
| 8 | 2255 |
| 9 | 3281 |
| 10 | 4579 |
| 11 | 6181 |
| 12 | 8119 |
| 13 | 10425 |
| 14 | 13131 |
| 15 | 16269 |
| 16 | 19871 |
| 17 | 23969 |
| 18 | 28595 |
| 19 | 33781 |
| 20 | 39559 |
| 21 | 45961 |
| 22 | 53019 |
| 23 | 60765 |
| 24 | 69231 |
| 25 | 78449 |
| 26 | 88451 |
| 27 | 99269 |
| 28 | 110935 |
| 29 | 123481 |
| 30 | 136939 |
| 31 | 151341 |
| 32 | 166719 |
| 33 | 183105 |
| 34 | 200531 |
| 35 | 219029 |
| 36 | 238631 |
| 37 | 259369 |
| 38 | 281275 |
| 39 | 304381 |