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 | 2 |
| 2 | 19 |
| 3 | 19 |
| 4 | 3449 |
| 5 | 32261 |
| 6 | 152617 |
| 7 | 3294173 |
| 8 | 3376853 |
| 9 | 135967277 |
| 10 | 135967277 |
| 11 | 7909306973 |
| 12 | 92233439147 |
| 13 | 115385868869 |
| 14 | 1356446145697 |
| 15 | 56020344873707 |
| 16 | 56020344873707 |
| 17 | 930522055948829 |
| 18 | 9116268492336169 |
| 19 | 10744682090246617 |