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 | 1531 |
| 2 | 6841 |
| 3 | 15391 |
| 4 | 16651 |
| 5 | 33301 |
| 6 | 44371 |
| 7 | 57991 |
| 8 | 66601 |
| 9 | 83431 |
| 10 | 105871 |
| 11 | 145021 |
| 12 | 150151 |
| 13 | 165901 |
| 14 | 199621 |
| 15 | 209431 |
| 16 | 212851 |
| 17 | 231241 |
| 18 | 242551 |
| 19 | 291271 |
| 20 | 319681 |
| 21 | 331801 |
| 22 | 346141 |
| 23 | 377491 |
| 24 | 381631 |
| 25 | 385591 |
| 26 | 445741 |
| 27 | 451411 |
| 28 | 478801 |
| 29 | 481021 |
| 30 | 506791 |
| 31 | 507781 |