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 | 5 |
| 3 | 13 |
| 4 | 41 |
| 5 | 81 |
| 6 | 245 |
| 7 | 449 |
| 8 | 1185 |
| 9 | 2413 |
| 10 | 5585 |
| 11 | 11265 |
| 12 | 26693 |
| 13 | 53249 |
| 14 | 118081 |
| 15 | 248733 |
| 16 | 535041 |
| 17 | 1114113 |
| 18 | 2390885 |
| 19 | 4980737 |
| 20 | 10557201 |
| 21 | 22050797 |
| 22 | 46265345 |
| 23 | 96468993 |
| 24 | 201795717 |
| 25 | 419480401 |
| 26 | 873123841 |
| 27 | 1812204685 |
| 28 | 3760019521 |
| 29 | 7784628225 |
| 30 | 16111126325 |
| 31 | 33285996545 |
| 32 | 68729044993 |