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 | 3 |
| 2 | 8 |
| 3 | 21 |
| 4 | 38 |
| 5 | 79 |
| 6 | 176 |
| 7 | 289 |
| 8 | 482 |
| 9 | 723 |
| 10 | 980 |
| 11 | 1333 |
| 12 | 1782 |
| 13 | 2359 |
| 14 | 3000 |
| 15 | 3673 |
| 16 | 4442 |
| 17 | 5371 |
| 18 | 6524 |
| 19 | 7741 |
| 20 | 9150 |
| 21 | 10751 |
| 22 | 12864 |
| 23 | 15553 |
| 24 | 18306 |
| 25 | 21443 |
| 26 | 24772 |
| 27 | 28229 |
| 28 | 32710 |
| 29 | 37703 |
| 30 | 44232 |
| 31 | 51529 |
| 32 | 59210 |
| 33 | 67147 |
| 34 | 76620 |
| 35 | 86221 |
| 36 | 96078 |
| 37 | 106447 |
| 38 | 117200 |
| 39 | 128593 |
| 40 | 140370 |