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) |
|---|---|
| 3 | 5054 |
| 4 | 537636 |
| 5 | 2540032 |
| 6 | 114557000 |
| 7 | 1034315998 |
| 8 | 33898728836 |
| 9 | 400448833106 |
| 10 | 11203604497408 |
| 11 | 152849502772958 |
| 12 | 3876306765700644 |
| 13 | 58099728840105682 |
| 14 | 1375359477482867528 |
| 15 | 22057225099289357824 |
| 16 | 496348449090698237956 |
| 17 | 8370856315868909044082 |
| 18 | 181385918483215101487880 |