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 | 1 |
| 3 | 2 |
| 4 | 66 |
| 5 | 67 |
| 6 | 192 |
| 7 | 193 |
| 8 | 1921 |
| 9 | 2137 |
| 10 | 2480 |
| 11 | 2481 |
| 12 | 6577 |
| 13 | 6578 |
| 14 | 7307 |
| 15 | 7819 |
| 16 | 40587 |
| 17 | 40588 |
| 18 | 49849 |
| 19 | 49850 |
| 20 | 63674 |
| 21 | 64674 |
| 22 | 66871 |
| 23 | 66872 |
| 24 | 152056 |
| 25 | 153056 |
| 26 | 156431 |
| 27 | 176114 |
| 28 | 208882 |
| 29 | 208883 |
| 30 | 238674 |
| 31 | 238675 |
| 32 | 750675 |
| 33 | 753419 |
| 34 | 760278 |
| 35 | 762006 |
| 36 | 978006 |
| 37 | 978007 |
| 38 | 987268 |
| 39 | 991364 |