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 | 3 |
| 2 | 6 |
| 3 | 113573 |
| 4 | 230801 |
| 5 | 941071 |
| 6 | 5166859 |
| 7 | 30956561 |
| 8 | 123081011 |
| 9 | 3050325741 |
| 10 | 14086296281 |
| 11 | 60060345973 |
| 12 | 120331687901 |
| 13 | 316465918571 |
| 14 | 634257678809 |
| 15 | 8042099198501 |
| 16 | 34761370800833 |
| 17 | 134702376451061 |
| 18 | 269979973606237 |