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 | 6247 |
| 2 | 860017 |
| 3 | 23663523 |
| 4 | 286168923 |
| 5 | 2106810049 |
| 6 | 11131321791 |
| 7 | 46387885537 |
| 8 | 161770028369 |
| 9 | 491117662815 |
| 10 | 1334411256817 |
| 11 | 3311007744155 |
| 12 | 7616624997827 |
| 13 | 16434220066785 |
| 14 | 33565300493927 |
| 15 | 65367853464305 |
| 16 | 122110269851089 |