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) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 9 |
| 3 | 10 |
| 4 | 40 |
| 5 | 41 |
| 6 | 83 |
| 7 | 84 |
| 8 | 114 |
| 9 | 115 |
| 10 | 181 |
| 11 | 182 |
| 12 | 2912 |
| 13 | 2913 |
| 14 | 2919 |
| 15 | 2920 |
| 16 | 3430 |
| 17 | 3431 |
| 18 | 4229 |
| 19 | 4230 |
| 20 | 4560 |
| 21 | 4561 |
| 22 | 4699 |
| 23 | 4700 |
| 24 | 7430 |
| 25 | 7431 |
| 26 | 7437 |
| 27 | 7438 |
| 28 | 8308 |
| 29 | 8309 |
| 30 | 22631 |
| 31 | 22632 |
| 32 | 23142 |
| 33 | 23143 |
| 34 | 23149 |
| 35 | 23150 |
| 36 | 1942340 |
| 37 | 1942341 |
| 38 | 1942347 |
| 39 | 1942348 |
| 40 | 1955878 |