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 | 2 |
| 2 | 3 |
| 3 | 8 |
| 4 | 27 |
| 5 | 125 |
| 6 | 728 |
| 7 | 5053 |
| 8 | 40341 |
| 9 | 362914 |
| 10 | 3628855 |
| 11 | 39916889 |
| 12 | 479001744 |
| 13 | 6227021033 |
| 14 | 87178291577 |
| 15 | 1307674368610 |
| 16 | 20922789888987 |
| 17 | 355687428097597 |
| 18 | 6402373705730584 |
| 19 | 121645100408836181 |
| 20 | 2432902008176646765 |
| 21 | 51090942171709450946 |
| 22 | 1124000727777607697711 |