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 | 5 |
| 2 | 38 |
| 3 | 331 |
| 4 | 3098 |
| 5 | 30330 |
| 6 | 306276 |
| 7 | 3163737 |
| 8 | 33252050 |
| 9 | 354312946 |
| 10 | 3817498004 |
| 11 | 41510761346 |
| 12 | 454882507468 |
| 13 | 5017662052868 |
| 14 | 55664182358808 |
| 15 | 620592559670979 |
| 16 | 6949200032479746 |
| 17 | 78117065527443654 |
| 18 | 881170275583541004 |
| 19 | 9970663315885385502 |
| 20 | 113137928354523348300 |