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 | 0 |
| 2 | 1 |
| 3 | 10 |
| 4 | 100 |
| 5 | 1000 |
| 6 | 6813 |
| 7 | 10000 |
| 8 | 14678 |
| 9 | 46416 |
| 10 | 100000 |
| 11 | 146780 |
| 12 | 464159 |
| 13 | 1000000 |
| 14 | 4641589 |
| 15 | 10000000 |
| 16 | 21544347 |
| 17 | 68129207 |
| 18 | 100000000 |
| 19 | 1000000000 |
| 20 | 10000000000 |
| 21 | 100000000000 |
| 22 | 316227766017 |
| 23 | 681292069058 |
| 24 | 1000000000000 |
| 25 | 2154434690032 |
| 26 | 10000000000000 |
| 27 | 21544346900319 |