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 | 0 |
| 1 | 1 |
| 2 | 7 |
| 3 | 8 |
| 4 | 9 |
| 5 | 15 |
| 6 | 16 |
| 7 | 22 |
| 8 | 23 |
| 9 | 24 |
| 10 | 25 |
| 11 | 53 |
| 12 | 67 |
| 13 | 78 |
| 14 | 81 |
| 15 | 91 |
| 16 | 105 |
| 17 | 156 |
| 18 | 497 |
| 19 | 1126 |
| 20 | 1472 |
| 21 | 3560 |
| 22 | 3620 |
| 23 | 23381 |
| 24 | 30206 |
| 25 | 30688 |
| 26 | 30776 |
| 27 | 30982 |
| 28 | 51700 |
| 29 | 52831 |
| 30 | 52986 |
| 31 | 161086 |
| 32 | 269894 |
| 33 | 482784 |
| 34 | 790601 |
| 35 | 1702855 |
| 36 | 1702856 |
| 37 | 1702857 |
| 38 | 1702872 |
| 39 | 1702873 |
| 40 | 2220150 |