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 | 13 |
| 3 | 299 |
| 4 | 9867 |
| 5 | 424281 |
| 6 | 22486893 |
| 7 | 1416674259 |
| 8 | 103417220907 |
| 9 | 8583629335281 |
| 10 | 798277528181133 |
| 11 | 82222585402656699 |
| 12 | 9291152150500206987 |
| 13 | 1142811714511525459401 |
| 14 | 151993958030032886100333 |
| 15 | 21735135998294702712347619 |
| 16 | 3325475807739089514989185707 |
| 17 | 542052556661471590943237270241 |