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 | 7 |
| 3 | 12 |
| 4 | 19 |
| 5 | 30 |
| 6 | 43 |
| 7 | 60 |
| 8 | 83 |
| 9 | 112 |
| 10 | 155 |
| 11 | 202 |
| 12 | 285 |
| 13 | 416 |
| 14 | 553 |
| 15 | 912 |
| 16 | 1343 |
| 17 | 1776 |
| 18 | 2225 |
| 19 | 2734 |
| 20 | 3303 |
| 21 | 3874 |
| 22 | 6845 |
| 23 | 11568 |
| 24 | 16955 |
| 25 | 26266 |
| 26 | 35943 |
| 27 | 50374 |
| 28 | 75935 |
| 29 | 106692 |
| 30 | 142691 |
| 31 | 180202 |
| 32 | 231035 |
| 33 | 312874 |
| 34 | 417785 |
| 35 | 547806 |
| 36 | 695897 |
| 37 | 897004 |
| 38 | 1294383 |
| 39 | 1728164 |
| 40 | 2318205 |
| 41 | 2911894 |
| 42 | 3516605 |