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 | 4 |
| 2 | 26 |
| 3 | 122309 |
| 4 | 918349 |
| 5 | 1892158 |
| 6 | 46917727 |
| 7 | 25411507 |
| 8 | 629951893 |
| 9 | 444564787601 |
| 10 | 47147317432111 |
| 11 | 6249165484647581 |
| 12 | 68535341599076501 |
| 13 | 49254291193918837 |
| 14 | 70468687493735802121 |
| 15 | 806424054403260562011601 |
| 16 | 1987232535137485809825804281 |
| 17 | 7450185554509682737733199157763041 |