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 | 148 |
| 2 | 21904 |
| 3 | 1492552 |
| 4 | 54035194 |
| 5 | 1215505987 |
| 6 | 18986502099 |
| 7 | 222531132820 |
| 8 | 2068398813560 |
| 9 | 15880238812350 |
| 10 | 103853282918692 |
| 11 | 592465318954478 |
| 12 | 3004359078280776 |
| 13 | 13748441004054634 |
| 14 | 57481715090022532 |
| 15 | 221828958813980507 |