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 | 0 |
| 2 | 15 |
| 3 | 84 |
| 4 | 312 |
| 5 | 852 |
| 6 | 1878 |
| 7 | 3654 |
| 8 | 6546 |
| 9 | 10680 |
| 10 | 16668 |
| 11 | 25002 |
| 12 | 35910 |
| 13 | 50136 |
| 14 | 68190 |
| 15 | 90462 |
| 16 | 118200 |
| 17 | 152274 |
| 18 | 192828 |
| 19 | 240480 |
| 20 | 296880 |
| 21 | 361962 |
| 22 | 437832 |
| 23 | 525756 |
| 24 | 625440 |
| 25 | 739146 |
| 26 | 867864 |
| 27 | 1011822 |
| 28 | 1174062 |
| 29 | 1354572 |
| 30 | 1554114 |
| 31 | 1775568 |
| 32 | 2020848 |
| 33 | 2289054 |
| 34 | 2582760 |
| 35 | 2905410 |