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 | 0 |
| 2 | 75 |
| 3 | 244 |
| 4 | 86359 |
| 5 | 281384 |
| 6 | 99658019 |
| 7 | 324716700 |
| 8 | 115005267375 |
| 9 | 374722790224 |
| 10 | 132715978892539 |
| 11 | 432429775201604 |
| 12 | 153154124636722439 |
| 13 | 499023585859860600 |
| 14 | 176739727114798801875 |
| 15 | 575872785652503930604 |
| 16 | 203957491936353180641119 |