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 | 6 |
| 2 | 21 |
| 3 | 301 |
| 4 | 697 |
| 5 | 1333 |
| 6 | 1909 |
| 7 | 2041 |
| 8 | 3901 |
| 9 | 24601 |
| 10 | 26977 |
| 11 | 96361 |
| 12 | 130153 |
| 13 | 163201 |
| 14 | 250321 |
| 15 | 275833 |
| 16 | 296341 |
| 17 | 389593 |
| 18 | 486877 |
| 19 | 495529 |
| 20 | 542413 |
| 21 | 808861 |
| 22 | 1005421 |
| 23 | 1005649 |
| 24 | 1055833 |
| 25 | 1063141 |
| 26 | 1232053 |
| 27 | 1284121 |
| 28 | 1403221 |
| 29 | 1618597 |
| 30 | 1787917 |
| 31 | 2287933 |
| 32 | 2462881 |
| 33 | 2488201 |
| 34 | 2666437 |