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 | 5 |
| 2 | 231 |
| 3 | 14586 |
| 4 | 1062347 |
| 5 | 84021990 |
| 6 | 7012604550 |
| 7 | 607892634420 |
| 8 | 54200780036595 |
| 9 | 4938927219474990 |
| 10 | 457909109348466930 |
| 11 | 43057935618181929900 |
| 12 | 4096531994713828810686 |
| 13 | 393617202432246696493436 |
| 14 | 38142088615983865845923052 |
| 15 | 3723160004902167033863327592 |