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 | 0 |
| 2 | 3 |
| 3 | 19 |
| 4 | 79 |
| 5 | 139 |
| 6 | 223 |
| 7 | 463 |
| 8 | 544 |
| 9 | 1096 |
| 10 | 1419 |
| 11 | 3247 |
| 12 | 3877 |
| 13 | 4417 |
| 14 | 9507 |
| 15 | 11091 |
| 16 | 14602 |
| 17 | 27811 |
| 18 | 29188 |
| 19 | 106729 |
| 20 | 188308 |