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 | 1 |
| 2 | 2 |
| 3 | 21 |
| 4 | 266 |
| 5 | 387 |
| 6 | 657 |
| 7 | 1314 |
| 8 | 6291 |
| 9 | 16113 |
| 10 | 25767 |
| 11 | 27594 |
| 12 | 41902 |
| 13 | 54243 |
| 14 | 55314 |
| 15 | 56457 |
| 16 | 89018 |
| 17 | 96141 |
| 18 | 155601 |
| 19 | 172746 |
| 20 | 219842 |
| 21 | 294273 |
| 22 | 300871 |
| 23 | 384426 |
| 24 | 412398 |
| 25 | 453781 |
| 26 | 579474 |
| 27 | 653421 |
| 28 | 660879 |
| 29 | 669609 |
| 30 | 951881 |
| 31 | 993307 |
| 32 | 1117338 |
| 33 | 1246077 |
| 34 | 1401258 |
| 35 | 1438623 |
| 36 | 1535409 |
| 37 | 1870533 |