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) |
|---|---|
| 0 | 0 |
| 1 | 6 |
| 2 | 21 |
| 3 | 48 |
| 4 | 90 |
| 5 | 150 |
| 6 | 231 |
| 7 | 336 |
| 8 | 468 |
| 9 | 630 |
| 10 | 825 |
| 11 | 1056 |
| 12 | 1326 |
| 13 | 1638 |
| 14 | 1995 |
| 15 | 2400 |
| 16 | 2856 |
| 17 | 3366 |
| 18 | 3933 |
| 19 | 4560 |
| 20 | 5250 |
| 21 | 6006 |
| 22 | 6831 |
| 23 | 7728 |
| 24 | 8700 |
| 25 | 9750 |
| 26 | 10881 |
| 27 | 12096 |
| 28 | 13398 |
| 29 | 14790 |
| 30 | 16275 |
| 31 | 17856 |
| 32 | 19536 |
| 33 | 21318 |
| 34 | 23205 |
| 35 | 25200 |
| 36 | 27306 |
| 37 | 29526 |
| 38 | 31863 |
| 39 | 34320 |
| 40 | 36900 |
| 41 | 39606 |
| 42 | 42441 |
| 43 | 45408 |
| 44 | 48510 |