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 | 405 |
| 2 | 2155 |
| 3 | 5845 |
| 4 | 13525 |
| 5 | 24575 |
| 6 | 44545 |
| 7 | 69195 |
| 8 | 107925 |
| 9 | 156505 |
| 10 | 223355 |
| 11 | 301605 |
| 12 | 413755 |
| 13 | 535845 |
| 14 | 694695 |
| 15 | 882245 |