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 | 7 |
| 2 | 799 |
| 3 | 78407 |
| 4 | 7683199 |
| 5 | 752875207 |
| 6 | 73774087199 |
| 7 | 7229107670407 |
| 8 | 708378777612799 |
| 9 | 69413891098384007 |
| 10 | 6801852948864019999 |
| 11 | 666512175097575576007 |
| 12 | 65311391306613542428799 |
| 13 | 6399849835873029582446407 |
| 14 | 627119972524250285537319199 |
| 15 | 61451357457540654953074835207 |