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 | 0 |
| 2 | 1 |
| 3 | 7 |
| 4 | 19 |
| 5 | 48 |
| 6 | 112 |
| 7 | 212 |
| 8 | 383 |
| 9 | 641 |
| 10 | 988 |
| 11 | 1523 |
| 12 | 2250 |
| 13 | 3103 |
| 14 | 4364 |
| 15 | 5831 |
| 16 | 7696 |
| 17 | 9985 |
| 18 | 12945 |
| 19 | 16164 |
| 20 | 20246 |
| 21 | 24946 |
| 22 | 30145 |
| 23 | 36385 |
| 24 | 43839 |
| 25 | 51752 |
| 26 | 61610 |
| 27 | 72475 |
| 28 | 84273 |
| 29 | 97231 |
| 30 | 112733 |