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 | 5 |
| 3 | 10 |
| 4 | 13 |
| 5 | 34 |
| 6 | 101 |
| 7 | 109 |
| 8 | 138 |
| 9 | 1738 |
| 10 | 10114 |
| 11 | 19794 |
| 12 | 1011090 |
| 13 | 1019010 |
| 14 | 1054130 |
| 15 | 1091010 |
| 16 | 34406858 |
| 17 | 178858133 |
| 18 | 565606858 |
| 19 | 4289521091010 |
| 20 | 55841058721258 |