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 | 121 |
| 3 | 1111 |
| 4 | 1331 |
| 5 | 1441 |
| 6 | 1661 |
| 7 | 1991 |
| 8 | 10201 |
| 9 | 11231 |
| 10 | 11341 |
| 11 | 11561 |
| 12 | 11671 |
| 13 | 12001 |
| 14 | 12221 |
| 15 | 12661 |
| 16 | 12881 |
| 17 | 12991 |
| 18 | 13211 |
| 19 | 13231 |
| 20 | 13541 |
| 21 | 14201 |
| 22 | 14311 |
| 23 | 14531 |
| 24 | 14641 |
| 25 | 14971 |
| 26 | 15191 |
| 27 | 15251 |
| 28 | 15851 |
| 29 | 15961 |
| 30 | 16181 |
| 31 | 16291 |
| 32 | 16621 |
| 33 | 16841 |
| 34 | 17161 |
| 35 | 17281 |
| 36 | 17611 |
| 37 | 17831 |
| 38 | 18271 |
| 39 | 18281 |