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 | 2 |
| 1 | 8 |
| 2 | 62 |
| 3 | 488 |
| 4 | 3842 |
| 5 | 30248 |
| 6 | 238142 |
| 7 | 1874888 |
| 8 | 14760962 |
| 9 | 116212808 |
| 10 | 914941502 |
| 11 | 7203319208 |
| 12 | 56711612162 |
| 13 | 446489578088 |
| 14 | 3515205012542 |
| 15 | 27675150522248 |
| 16 | 217885999165442 |
| 17 | 1715412842801288 |
| 18 | 13505416743244862 |
| 19 | 106327921103157608 |