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 | 0 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 18 |
| 6 | 21 |
| 7 | 36 |
| 8 | 58 |
| 9 | 68 |
| 10 | 78 |
| 11 | 84 |
| 12 | 94 |
| 13 | 150 |
| 14 | 178 |
| 15 | 190 |
| 16 | 591 |
| 17 | 686 |
| 18 | 812 |
| 19 | 840 |
| 20 | 2308 |
| 21 | 2530 |
| 22 | 2884 |
| 23 | 4311 |
| 24 | 6134 |
| 25 | 7695 |
| 26 | 8004 |
| 27 | 8109 |
| 28 | 9777 |
| 29 | 15570 |
| 30 | 17505 |