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 | 50 |
| 2 | 2452 |
| 3 | 120153 |
| 4 | 841073 |
| 5 | 41212583 |
| 6 | 14135916101 |
| 7 | 692659889378 |
| 8 | 33940334580952 |
| 9 | 1663076394471510 |
| 10 | 81490743329120786 |
| 11 | 570435203303853900 |
| 12 | 27951324961888870816 |
| 13 | 9587304461927883432788 |
| 14 | 469777918634466290881052 |