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 | 1 |
| 2 | 33 |
| 3 | 107 |
| 4 | 283 |
| 5 | 2054 |
| 6 | 9208 |
| 7 | 34867 |
| 8 | 176949 |
| 9 | 833001 |
| 10 | 3619285 |
| 11 | 16979210 |
| 12 | 79536106 |
| 13 | 362125386 |
| 14 | 1678147584 |
| 15 | 7816357207 |
| 16 | 36107427015 |
| 17 | 167380756056 |
| 18 | 778109691292 |
| 19 | 3610178963149 |
| 20 | 16759752441151 |
| 21 | 77893373268254 |
| 22 | 361906632299828 |