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 | 10396 |
| 3 | 326656 |
| 4 | 2619897841 |
| 5 | 82318050361 |
| 6 | 660219495802336 |
| 7 | 20744313326831116 |
| 8 | 166376633378560463881 |
| 9 | 5227608446905776928921 |
| 10 | 41927244364003774523222476 |
| 11 | 1317367783816405284315203776 |
| 12 | 10565749434051302554022550018121 |
| 13 | 331979316252074156011094205115681 |