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 | 5 |
| 2 | 211 |
| 3 | 38501 |
| 4 | 413353 |
| 5 | 10938023 |
| 6 | 142414669 |
| 7 | 163710121 |
| 8 | 8835528511 |
| 9 | 31587561361 |
| 10 | 343834606051 |
| 11 | 1480975873513 |
| 12 | 26923643849953 |