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 | 0 |
| 2 | 7 |
| 3 | 77 |
| 4 | 161 |
| 5 | 252 |
| 6 | 343 |
| 7 | 434 |
| 8 | 525 |
| 9 | 595 |
| 10 | 616 |
| 11 | 686 |
| 12 | 707 |
| 13 | 777 |
| 14 | 868 |
| 15 | 959 |
| 16 | 1001 |
| 17 | 1771 |
| 18 | 2002 |
| 19 | 2772 |
| 20 | 3003 |
| 21 | 3773 |
| 22 | 4004 |
| 23 | 4774 |
| 24 | 5005 |
| 25 | 5775 |
| 26 | 6006 |
| 27 | 6776 |
| 28 | 7007 |
| 29 | 7777 |
| 30 | 8008 |
| 31 | 8778 |
| 32 | 9009 |
| 33 | 9779 |
| 34 | 10101 |
| 35 | 10801 |
| 36 | 11011 |
| 37 | 11711 |
| 38 | 12621 |
| 39 | 13531 |
| 40 | 14441 |
| 41 | 15351 |
| 42 | 16261 |
| 43 | 16961 |