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 | 1 |
| 2 | 667 |
| 3 | 108817 |
| 4 | 10796275 |
| 5 | 858251401 |
| 6 | 61283936827 |
| 7 | 4147211888737 |
| 8 | 273109341611395 |
| 9 | 17736960725057401 |
| 10 | 1143745441025278987 |
| 11 | 73483870162431314257 |
| 12 | 4712360023676936085715 |
| 13 | 301901195708380781658601 |
| 14 | 19331914197940256185117147 |
| 15 | 1237580377249840094294765377 |