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 | 255 |
| 2 | 6305 |
| 3 | 58975 |
| 4 | 320481 |
| 5 | 1225631 |
| 6 | 3693505 |
| 7 | 9399615 |
| 8 | 21108545 |
| 9 | 43067071 |
| 10 | 81457761 |
| 11 | 144913055 |
| 12 | 245089825 |
| 13 | 397304415 |
| 14 | 621228161 |
| 15 | 941643391 |
| 16 | 1389259905 |
| 17 | 2001591935 |
| 18 | 2823895585 |
| 19 | 3910166751 |
| 20 | 5324199521 |
| 21 | 7140705055 |
| 22 | 9446490945 |