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 | 15 |
| 2 | 55 |
| 3 | 75 |
| 4 | 91 |
| 5 | 175 |
| 6 | 247 |
| 7 | 275 |
| 8 | 715 |
| 9 | 775 |
| 10 | 1275 |
| 11 | 1435 |
| 12 | 2275 |
| 13 | 2635 |
| 14 | 3075 |
| 15 | 3355 |
| 16 | 4615 |
| 17 | 6355 |
| 18 | 6475 |
| 19 | 7975 |
| 20 | 8827 |
| 21 | 9139 |
| 22 | 10075 |
| 23 | 10675 |
| 24 | 11275 |
| 25 | 11935 |
| 26 | 13515 |
| 27 | 14555 |
| 28 | 21775 |
| 29 | 26455 |
| 30 | 28975 |
| 31 | 30415 |
| 32 | 31675 |
| 33 | 32395 |
| 34 | 43615 |
| 35 | 46075 |
| 36 | 47275 |
| 37 | 52195 |
| 38 | 59755 |
| 39 | 64255 |
| 40 | 77275 |
| 41 | 78403 |
| 42 | 81055 |