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 | 46 |
| 2 | 2070 |
| 3 | 93150 |
| 4 | 4191750 |
| 5 | 188628750 |
| 6 | 8488293750 |
| 7 | 381973218750 |
| 8 | 17188794843750 |
| 9 | 773495767967715 |
| 10 | 34807309558500600 |
| 11 | 1566328930130432160 |
| 12 | 70484801855775179400 |
| 13 | 3171816083505641022000 |
| 14 | 142731723757562953695000 |