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 | 2 |
| 2 | 13 |
| 3 | 226 |
| 4 | 7889 |
| 5 | 458026 |
| 6 | 39684637 |
| 7 | 4788052298 |
| 8 | 766526598721 |
| 9 | 157108817646514 |
| 10 | 40104442275129101 |
| 11 | 12472587843118746322 |
| 12 | 4641978487740740993233 |
| 13 | 2036813028164774540010266 |
| 14 | 1040451608604560812273060189 |
| 15 | 612098707457003526384666111226 |