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) |
|---|---|
| 3 | 11 |
| 4 | 78 |
| 5 | 698 |
| 6 | 12280 |
| 7 | 179685 |
| 8 | 5518135 |
| 9 | 1037845296 |
| 10 | 1037845296 |
| 11 | 46935813565 |
| 12 | 2860727439460 |
| 13 | 285947759601954 |
| 14 | 1018897102759406 |
| 15 | 672654273047783383 |