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 | 2 |
| 2 | 4 |
| 3 | 6 |
| 4 | 40 |
| 5 | 106 |
| 6 | 314 |
| 7 | 1954 |
| 8 | 2234 |
| 9 | 2794 |
| 10 | 11194 |
| 11 | 22394 |
| 12 | 58234 |
| 13 | 111994 |
| 14 | 160154 |
| 15 | 291194 |
| 16 | 425594 |
| 17 | 560554 |
| 18 | 1022554 |
| 19 | 1455994 |
| 20 | 1601594 |
| 21 | 3203194 |
| 22 | 11703994 |
| 23 | 16743994 |
| 24 | 21781754 |
| 25 | 24751994 |
| 26 | 53253194 |
| 27 | 60860794 |
| 28 | 79587194 |
| 29 | 95295194 |
| 30 | 181060874 |
| 31 | 287123194 |
| 32 | 435635194 |
| 33 | 973772794 |