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 | 21 |
| 2 | 233 |
| 3 | 2584 |
| 4 | 28657 |
| 5 | 317811 |
| 6 | 3524578 |
| 7 | 39088169 |
| 8 | 433494437 |
| 9 | 4807526976 |
| 10 | 53316291173 |
| 11 | 591286729879 |
| 12 | 6557470319842 |
| 13 | 72723460248141 |
| 14 | 806515533049393 |
| 15 | 8944394323791464 |
| 16 | 99194853094755497 |
| 17 | 1100087778366101931 |