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 | 21 |
| 2 | 149 |
| 3 | 277 |
| 4 | 405 |
| 5 | 533 |
| 6 | 661 |
| 7 | 789 |
| 8 | 917 |
| 9 | 1045 |
| 10 | 1173 |
| 11 | 1301 |
| 12 | 1429 |
| 13 | 1557 |
| 14 | 1685 |
| 15 | 1813 |
| 16 | 1941 |
| 17 | 2069 |
| 18 | 2197 |
| 19 | 2325 |
| 20 | 2453 |
| 21 | 2581 |
| 22 | 2709 |
| 23 | 2837 |
| 24 | 2965 |
| 25 | 3093 |
| 26 | 3221 |
| 27 | 3349 |
| 28 | 3477 |
| 29 | 3605 |
| 30 | 3733 |
| 31 | 3861 |
| 32 | 3989 |
| 33 | 4117 |
| 34 | 4245 |
| 35 | 4373 |
| 36 | 4501 |
| 37 | 4629 |
| 38 | 4757 |
| 39 | 4885 |
| 40 | 5013 |
| 41 | 5141 |
| 42 | 5269 |
| 43 | 5397 |
| 44 | 5525 |
| 45 | 5653 |