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 | 11 |
| 2 | 19 |
| 3 | 41 |
| 4 | 149 |
| 5 | 181 |
| 6 | 251 |
| 7 | 449 |
| 8 | 491 |
| 9 | 499 |
| 10 | 641 |
| 11 | 811 |
| 12 | 1009 |
| 13 | 1289 |
| 14 | 1361 |
| 15 | 1699 |
| 16 | 2251 |
| 17 | 2549 |
| 18 | 4001 |
| 19 | 4289 |
| 20 | 4441 |
| 21 | 4729 |
| 22 | 6449 |
| 23 | 6481 |
| 24 | 6761 |
| 25 | 7841 |
| 26 | 8419 |
| 27 | 9001 |
| 28 | 9619 |
| 29 | 10891 |
| 30 | 11369 |
| 31 | 11681 |
| 32 | 12149 |
| 33 | 12251 |
| 34 | 12401 |
| 35 | 12601 |
| 36 | 12809 |
| 37 | 13249 |
| 38 | 13691 |
| 39 | 13721 |
| 40 | 14449 |
| 41 | 14489 |