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 | 50 |
| 3 | 5193 |
| 4 | 583199 |
| 5 | 65485654 |
| 6 | 7354266811 |
| 7 | 825905301851 |
| 8 | 92751581627976 |
| 9 | 10416273692997679 |
| 10 | 1169777980482365913 |
| 11 | 131369486228240893660 |
| 12 | 14753177269494392259423 |
| 13 | 1656824927874469183283433 |
| 14 | 186066281959642930757881316 |
| 15 | 20895787297635543757965741097 |