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 | 1 |
| 3 | 2 |
| 4 | 5 |
| 5 | 6 |
| 6 | 66 |
| 7 | 77 |
| 8 | 626 |
| 9 | 5005 |
| 10 | 7777 |
| 11 | 22122 |
| 12 | 64446 |
| 13 | 87978 |
| 14 | 399993 |
| 15 | 1287821 |
| 16 | 5614165 |
| 17 | 5679765 |
| 18 | 6407046 |
| 19 | 6865686 |
| 20 | 7107017 |
| 21 | 8349438 |
| 22 | 8547458 |
| 23 | 282777282 |
| 24 | 1220330221 |
| 25 | 43474247434 |
| 26 | 43833533834 |
| 27 | 64630703646 |
| 28 | 68622322686 |
| 29 | 73855855837 |
| 30 | 1249451549421 |
| 31 | 2468208028642 |