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 | 99 |
| 3 | 9701 |
| 4 | 950599 |
| 5 | 93149001 |
| 6 | 9127651499 |
| 7 | 894416697901 |
| 8 | 87643708742799 |
| 9 | 8588189040096401 |
| 10 | 841554882220704499 |
| 11 | 82463790268588944501 |
| 12 | 8080609891439495856599 |
| 13 | 791817305570802005002201 |
| 14 | 77590015336047156994359099 |
| 15 | 7603029685627050583442189501 |