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 | 3 |
| 2 | 37 |
| 3 | 32833 |
| 4 | 3200401 |
| 5 | 14349637 |
| 6 | 52523101 |
| 7 | 130692997 |
| 8 | 254806273 |
| 9 | 459167941 |
| 10 | 2706790087 |
| 11 | 3486790963 |
| 12 | 3939047533 |
| 13 | 10510110703 |
| 14 | 12762826651 |
| 15 | 14025528757 |
| 16 | 14693292433 |
| 17 | 16850593873 |
| 18 | 23863550761 |
| 19 | 34359754753 |
| 20 | 38579506813 |