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 | 1 |
| 2 | 6 |
| 3 | 18 |
| 4 | 40 |
| 5 | 75 |
| 6 | 126 |
| 7 | 196 |
| 8 | 288 |
| 9 | 405 |
| 10 | 550 |
| 11 | 726 |
| 12 | 936 |
| 13 | 1183 |
| 14 | 1470 |
| 15 | 1800 |
| 16 | 2176 |
| 17 | 2601 |
| 18 | 3078 |
| 19 | 3610 |
| 20 | 4200 |
| 21 | 4851 |
| 22 | 5566 |
| 23 | 6348 |
| 24 | 7200 |
| 25 | 8125 |
| 26 | 9126 |
| 27 | 10206 |
| 28 | 11368 |
| 29 | 12615 |
| 30 | 13950 |
| 31 | 15376 |
| 32 | 16896 |
| 33 | 18513 |
| 34 | 20230 |
| 35 | 22050 |
| 36 | 23976 |
| 37 | 26011 |
| 38 | 28158 |
| 39 | 30420 |
| 40 | 32800 |
| 41 | 35301 |
| 42 | 37926 |
| 43 | 40678 |