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) |
|---|---|
| 0 | 1 |
| 1 | 25 |
| 2 | 415 |
| 3 | 5845 |
| 4 | 76111 |
| 5 | 952525 |
| 6 | 11679655 |
| 7 | 141710965 |
| 8 | 1710104671 |
| 9 | 20579684125 |
| 10 | 247310795095 |
| 11 | 2969873300485 |
| 12 | 35651407676431 |
| 13 | 427894724193325 |
| 14 | 5135204742169735 |
| 15 | 61625269469056405 |
| 16 | 739520126057523391 |