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 | 86 |
| 2 | 783 |
| 3 | 65610 |
| 4 | 2767631 |
| 5 | 237172426 |
| 6 | 16940254423 |
| 7 | 1456404454010 |
| 8 | 119519290640511 |
| 9 | 10278397804194666 |
| 10 | 873639089311509863 |
| 11 | 75132812815390491610 |
| 12 | 6442513290262072850191 |
| 13 | 554056059394660086575306 |