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 | 51 |
| 2 | 5934 |
| 3 | 956635 |
| 4 | 174342216 |
| 5 | 33891544611 |
| 6 | 6863038218842 |
| 7 | 1429472717114571 |
| 8 | 303941636563596474 |
| 9 | 65651393478908055043 |
| 10 | 14357959753853997576054 |
| 11 | 3171803836529457801306939 |
| 12 | 706519304586940156873850720 |
| 13 | 158477714782731345445746979203 |