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 | 49 |
| 3 | 1101 |
| 4 | 22152 |
| 5 | 356692 |
| 6 | 4747695 |
| 7 | 68488297 |
| 8 | 1050281271 |
| 9 | 16268725036 |
| 10 | 247512489984 |
| 11 | 3713720283901 |
| 12 | 55663627322361 |
| 13 | 837518704332088 |
| 14 | 12633257316861814 |
| 15 | 190523379365155077 |
| 16 | 2870374015520944177 |