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) |
|---|---|
| 7 | 8 |
| 8 | 76 |
| 9 | 440 |
| 10 | 2019 |
| 11 | 8147 |
| 12 | 30367 |
| 13 | 107061 |
| 14 | 361655 |
| 15 | 1181761 |
| 16 | 3762817 |
| 17 | 11733393 |
| 18 | 35957132 |
| 19 | 108591703 |
| 20 | 323914688 |
| 21 | 955984083 |
| 22 | 2795513143 |
| 23 | 8108894051 |
| 24 | 23354358683 |
| 25 | 66838785954 |
| 26 | 190211189706 |
| 27 | 538567451991 |
| 28 | 1517943035326 |