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 | 120 |
| 2 | 2870 |
| 3 | 28238 |
| 4 | 163043 |
| 5 | 677505 |
| 6 | 2225195 |
| 7 | 6290716 |
| 8 | 15474251 |
| 9 | 34620063 |
| 10 | 71045837 |
| 11 | 136895633 |
| 12 | 249167782 |
| 13 | 432945014 |
| 14 | 721867127 |
| 15 | 1163471851 |
| 16 | 1819556318 |
| 17 | 2767225673 |
| 18 | 4114863787 |
| 19 | 5983678292 |
| 20 | 8546815362 |
| 21 | 11983543443 |
| 22 | 16566644515 |