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 | 256 |
| 2 | 3891 |
| 3 | 60074 |
| 4 | 927477 |
| 5 | 14319230 |
| 6 | 221073168 |
| 7 | 3413126694 |
| 8 | 52694924343 |
| 9 | 813551707879 |
| 10 | 12560344087053 |
| 11 | 193917905964431 |
| 12 | 2993879307207532 |
| 13 | 46222205533558883 |
| 14 | 713620044483130375 |
| 15 | 11017509052404905567 |