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 | 2 |
| 2 | 13 |
| 3 | 31 |
| 4 | 79 |
| 5 | 97 |
| 6 | 227 |
| 7 | 881 |
| 8 | 1013 |
| 9 | 2797 |
| 10 | 3181 |
| 11 | 3631 |
| 12 | 8101 |
| 13 | 22727 |
| 14 | 81001 |
| 15 | 101363 |
| 16 | 109013 |
| 17 | 131363 |
| 18 | 181813 |
| 19 | 272227 |
| 20 | 310181 |
| 21 | 310901 |
| 22 | 318181 |
| 23 | 318881 |
| 24 | 631013 |
| 25 | 636313 |
| 26 | 810401 |
| 27 | 818101 |
| 28 | 901097 |
| 29 | 904097 |
| 30 | 972227 |
| 31 | 1018813 |
| 32 | 1090013 |
| 33 | 1810013 |
| 34 | 2272727 |