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 | 19 |
| 4 | 38 |
| 5 | 65 |
| 6 | 108 |
| 7 | 165 |
| 8 | 247 |
| 9 | 350 |
| 10 | 489 |
| 11 | 658 |
| 12 | 876 |
| 13 | 1134 |
| 14 | 1456 |
| 15 | 1830 |
| 16 | 2285 |
| 17 | 2805 |
| 18 | 3425 |
| 19 | 4125 |
| 20 | 4946 |
| 21 | 5863 |
| 22 | 6924 |
| 23 | 8099 |
| 24 | 9443 |
| 25 | 10920 |
| 26 | 12593 |
| 27 | 14420 |
| 28 | 16472 |
| 29 | 18700 |
| 30 | 21184 |
| 31 | 23868 |
| 32 | 26841 |
| 33 | 30039 |
| 34 | 33561 |
| 35 | 37335 |
| 36 | 41470 |
| 37 | 45885 |
| 38 | 50700 |
| 39 | 55825 |
| 40 | 61391 |