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 | 17 |
| 3 | 93 |
| 4 | 349 |
| 5 | 1093 |
| 6 | 3093 |
| 7 | 8221 |
| 8 | 20957 |
| 9 | 51861 |
| 10 | 125509 |
| 11 | 298477 |
| 12 | 699789 |
| 13 | 1621285 |
| 14 | 3718325 |
| 15 | 8453181 |
| 16 | 19069885 |
| 17 | 42728245 |
| 18 | 95156901 |
| 19 | 210762253 |
| 20 | 464517485 |
| 21 | 1019214021 |
| 22 | 2227173397 |
| 23 | 4848613213 |
| 24 | 10519312029 |
| 25 | 22749902293 |
| 26 | 49056576773 |
| 27 | 105495131181 |
| 28 | 226291086157 |