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 | 555 |
| 2 | 595 |
| 3 | 777 |
| 4 | 969 |
| 5 | 1001 |
| 6 | 1221 |
| 7 | 1551 |
| 8 | 1771 |
| 9 | 3333 |
| 10 | 3553 |
| 11 | 5335 |
| 12 | 5555 |
| 13 | 5665 |
| 14 | 5885 |
| 15 | 5995 |
| 16 | 7337 |
| 17 | 7557 |
| 18 | 7667 |
| 19 | 7777 |
| 20 | 7887 |
| 21 | 9339 |
| 22 | 9669 |
| 23 | 9779 |
| 24 | 9889 |
| 25 | 11211 |
| 26 | 11811 |
| 27 | 12121 |
| 28 | 12621 |
| 29 | 12921 |
| 30 | 13731 |
| 31 | 14241 |
| 32 | 14541 |
| 33 | 15051 |
| 34 | 15951 |
| 35 | 16261 |
| 36 | 16761 |
| 37 | 17171 |
| 38 | 18381 |