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 | 240 |
| 2 | 7128 |
| 3 | 163878 |
| 4 | 3440052 |
| 5 | 68710116 |
| 6 | 1328460312 |
| 7 | 25093766490 |
| 8 | 465757993812 |
| 9 | 8527096170390 |
| 10 | 154406753980596 |
| 11 | 2770879234068744 |
| 12 | 49351916066147196 |
| 13 | 873425626212657504 |
| 14 | 15373652306609086368 |
| 15 | 269322517606253198046 |