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 | 18 |
| 2 | 1810 |
| 3 | 263844 |
| 4 | 44916498 |
| 5 | 8345319268 |
| 6 | 1640651321764 |
| 7 | 335556407724360 |
| 8 | 70666388112940818 |
| 9 | 15220552520052960516 |
| 10 | 3337324864503769353060 |
| 11 | 742446552655157791828680 |
| 12 | 167167472732516775004539300 |
| 13 | 38021985442071415426063237704 |
| 14 | 8723111727436784830252513497928 |