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 | 10 |
| 2 | 300 |
| 3 | 195000 |
| 4 | 43950000 |
| 5 | 4106400000 |
| 6 | 396606000000 |
| 7 | 25271610000000 |
| 8 | 83084100000000 |
| 9 | 22661209000000000 |
| 10 | 1596879960000000000 |
| 11 | 3344565630000000000000 |
| 12 | 3344565630000000000000 |
| 13 | 3344565630000000000000 |
| 14 | 1795096118003100000000000000 |
| 15 | 33778738696128000000000000000 |