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 | 13 |
| 2 | 41 |
| 3 | 61 |
| 4 | 113 |
| 5 | 181 |
| 6 | 313 |
| 7 | 421 |
| 8 | 613 |
| 9 | 761 |
| 10 | 1013 |
| 11 | 1201 |
| 12 | 1289 |
| 13 | 1301 |
| 14 | 1741 |
| 15 | 1861 |
| 16 | 2113 |
| 17 | 2381 |
| 18 | 2521 |
| 19 | 3121 |
| 20 | 3613 |
| 21 | 4513 |
| 22 | 5101 |
| 23 | 5641 |
| 24 | 7321 |
| 25 | 8581 |
| 26 | 9661 |
| 27 | 9941 |
| 28 | 10513 |
| 29 | 11969 |
| 30 | 12641 |
| 31 | 13613 |
| 32 | 14281 |
| 33 | 14621 |
| 34 | 15313 |
| 35 | 16381 |
| 36 | 19013 |
| 37 | 19801 |
| 38 | 20201 |
| 39 | 21013 |
| 40 | 21841 |