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) |
|---|---|
| 0 | 1 |
| 1 | 87 |
| 2 | 3741 |
| 3 | 105995 |
| 4 | 2225895 |
| 5 | 36949857 |
| 6 | 504981379 |
| 7 | 5843355957 |
| 8 | 58433559570 |
| 9 | 512916800670 |
| 10 | 4000751045226 |
| 11 | 28005257316582 |
| 12 | 177366629671686 |
| 13 | 1023269017336650 |
| 14 | 5408707663065150 |
| 15 | 26322377293583730 |
| 16 | 118450697821126785 |
| 17 | 494705855605882455 |