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 | 10 |
| 1 | 41 |
| 2 | 830 |
| 3 | 3361 |
| 4 | 68050 |
| 5 | 275561 |
| 6 | 5579270 |
| 7 | 22592641 |
| 8 | 457432090 |
| 9 | 1852321001 |
| 10 | 37503852110 |
| 11 | 151867729441 |
| 12 | 3074858440930 |
| 13 | 12451301493161 |
| 14 | 252100888304150 |
| 15 | 1020854854709761 |
| 16 | 20669197982499370 |
| 17 | 83697646784707241 |