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) |
|---|---|
| 9 | 1 |
| 10 | 0 |
| 11 | 0 |
| 12 | 0 |
| 13 | 0 |
| 14 | 0 |
| 15 | 0 |
| 16 | 0 |
| 17 | 0 |
| 18 | 48619 |
| 19 | 184754 |
| 20 | 335918 |
| 21 | 587858 |
| 22 | 994838 |
| 23 | 1634378 |
| 24 | 2615006 |
| 25 | 4085948 |
| 26 | 6249098 |
| 27 | 227873431499 |
| 28 | 1914096764581 |
| 29 | 10597168136104 |
| 30 | 42893468596297 |
| 31 | 150965696385640 |
| 32 | 488842369407373 |
| 33 | 1495597557713296 |
| 34 | 4389498481714495 |
| 35 | 12479738997128938 |