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 | 399 |
| 2 | 2915 |
| 3 | 7055 |
| 4 | 63503 |
| 5 | 147455 |
| 6 | 1587599 |
| 7 | 1710863 |
| 8 | 2249999 |
| 9 | 2924099 |
| 10 | 6656399 |
| 11 | 9486399 |
| 12 | 14288399 |
| 13 | 19289663 |
| 14 | 25603599 |
| 15 | 26936099 |
| 16 | 28451555 |
| 17 | 31270463 |
| 18 | 32148899 |
| 19 | 45158399 |
| 20 | 49280399 |
| 21 | 71368703 |
| 22 | 91011599 |
| 23 | 105884099 |
| 24 | 111513599 |
| 25 | 144288143 |
| 26 | 146894399 |
| 27 | 150405695 |
| 28 | 152028899 |
| 29 | 175827599 |