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 | 2 |
| 2 | 4 |
| 3 | 12 |
| 4 | 20 |
| 5 | 38 |
| 6 | 56 |
| 7 | 88 |
| 8 | 120 |
| 9 | 170 |
| 10 | 220 |
| 11 | 292 |
| 12 | 364 |
| 13 | 462 |
| 14 | 560 |
| 15 | 688 |
| 16 | 816 |
| 17 | 978 |
| 18 | 1140 |
| 19 | 1340 |
| 20 | 1540 |
| 21 | 1782 |
| 22 | 2024 |
| 23 | 2312 |
| 24 | 2600 |
| 25 | 2938 |
| 26 | 3276 |
| 27 | 3668 |
| 28 | 4060 |
| 29 | 4510 |
| 30 | 4960 |
| 31 | 5472 |
| 32 | 5984 |
| 33 | 6562 |
| 34 | 7140 |
| 35 | 7788 |
| 36 | 8436 |
| 37 | 9158 |
| 38 | 9880 |
| 39 | 10680 |
| 40 | 11480 |
| 41 | 12362 |
| 42 | 13244 |
| 43 | 14212 |
| 44 | 15180 |
| 45 | 16238 |
| 46 | 17296 |
| 47 | 18448 |
| 48 | 19600 |
| 49 | 20850 |
| 50 | 22100 |