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) |
|---|---|
| 0 | 1 |
| 1 | 44 |
| 2 | 1936 |
| 3 | 85184 |
| 4 | 3748096 |
| 5 | 164916224 |
| 6 | 7256313856 |
| 7 | 319277809664 |
| 8 | 14048223625216 |
| 9 | 618121839509504 |
| 10 | 27197360938418176 |
| 11 | 1196683881290399744 |
| 12 | 52654090776777588736 |
| 13 | 2316779994178213904384 |
| 14 | 101938319743841411792896 |
| 15 | 4485286068729022118887424 |
| 16 | 197352587024076973231046656 |