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) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 6 |
| 3 | 13 |
| 4 | 32 |
| 5 | 89 |
| 6 | 276 |
| 7 | 943 |
| 8 | 3514 |
| 9 | 14159 |
| 10 | 61242 |
| 11 | 282633 |
| 12 | 1384684 |
| 13 | 7170701 |
| 14 | 39105992 |
| 15 | 223867419 |
| 16 | 1341434134 |
| 17 | 8392364851 |
| 18 | 54696456734 |