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) |
|---|---|
| 3 | 0 |
| 4 | 10 |
| 5 | 35 |
| 6 | 84 |
| 7 | 168 |
| 8 | 300 |
| 9 | 495 |
| 10 | 770 |
| 11 | 1144 |
| 12 | 1638 |
| 13 | 2275 |
| 14 | 3080 |
| 15 | 4080 |
| 16 | 5304 |
| 17 | 6783 |
| 18 | 8550 |
| 19 | 10640 |
| 20 | 13090 |
| 21 | 15939 |
| 22 | 19228 |
| 23 | 23000 |
| 24 | 27300 |
| 25 | 32175 |
| 26 | 37674 |
| 27 | 43848 |
| 28 | 50750 |
| 29 | 58435 |
| 30 | 66960 |
| 31 | 76384 |
| 32 | 86768 |
| 33 | 98175 |
| 34 | 110670 |
| 35 | 124320 |
| 36 | 139194 |
| 37 | 155363 |
| 38 | 172900 |
| 39 | 191880 |