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 | 47 |
| 2 | 449 |
| 3 | 457 |
| 4 | 467 |
| 5 | 479 |
| 6 | 487 |
| 7 | 499 |
| 8 | 547 |
| 9 | 647 |
| 10 | 947 |
| 11 | 4447 |
| 12 | 4457 |
| 13 | 4547 |
| 14 | 4549 |
| 15 | 4567 |
| 16 | 4597 |
| 17 | 4649 |
| 18 | 4657 |
| 19 | 4679 |
| 20 | 4759 |
| 21 | 4787 |
| 22 | 4789 |
| 23 | 4799 |
| 24 | 4877 |
| 25 | 4889 |
| 26 | 4957 |
| 27 | 4967 |
| 28 | 4969 |
| 29 | 4987 |
| 30 | 4999 |
| 31 | 5449 |
| 32 | 5477 |
| 33 | 5479 |
| 34 | 5647 |
| 35 | 5749 |
| 36 | 5849 |