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 | 238 |
| 3 | 2128 |
| 4 | 141018 |
| 5 | 1656022 |
| 6 | 113258929 |
| 7 | 1569283128 |
| 8 | 97311031516 |
| 9 | 1540259241508 |
| 10 | 86480812173044 |
| 11 | 1526208889551285 |
| 12 | 78586854206474282 |
| 13 | 1517934653629840928 |
| 14 | 72607979076706778162 |
| 15 | 1512452308916246272882 |