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) |
|---|---|
| 1 | 1 |
| 2 | 14 |
| 3 | 198 |
| 4 | 2124 |
| 5 | 20894 |
| 6 | 208420 |
| 7 | 2117454 |
| 8 | 21576952 |
| 9 | 218613631 |
| 10 | 2195038525 |
| 11 | 21848423462 |
| 12 | 216219614463 |
| 13 | 2135812278843 |
| 14 | 21121667130245 |
| 15 | 209377570378397 |
| 16 | 2080106337706143 |