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 | 1234 |
| 2 | 2345 |
| 3 | 3456 |
| 4 | 4567 |
| 5 | 5678 |
| 6 | 6789 |
| 7 | 78910 |
| 8 | 891011 |
| 9 | 9101112 |
| 10 | 10111213 |
| 11 | 11121314 |
| 12 | 12131415 |
| 13 | 13141516 |
| 14 | 14151617 |
| 15 | 15161718 |
| 16 | 16171819 |
| 17 | 17181920 |
| 18 | 18192021 |
| 19 | 19202122 |
| 20 | 20212223 |
| 21 | 21222324 |
| 22 | 22232425 |
| 23 | 23242526 |
| 24 | 24252627 |
| 25 | 25262728 |
| 26 | 26272829 |
| 27 | 27282930 |
| 28 | 28293031 |
| 29 | 29303132 |
| 30 | 30313233 |
| 31 | 31323334 |