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 | 4 |
| 1 | 21 |
| 2 | 66 |
| 3 | 161 |
| 4 | 336 |
| 5 | 630 |
| 6 | 1092 |
| 7 | 1782 |
| 8 | 2772 |
| 9 | 4147 |
| 10 | 6006 |
| 11 | 8463 |
| 12 | 11648 |
| 13 | 15708 |
| 14 | 20808 |
| 15 | 27132 |
| 16 | 34884 |
| 17 | 44289 |
| 18 | 55594 |
| 19 | 69069 |
| 20 | 85008 |
| 21 | 103730 |
| 22 | 125580 |
| 23 | 150930 |
| 24 | 180180 |
| 25 | 213759 |
| 26 | 252126 |
| 27 | 295771 |
| 28 | 345216 |
| 29 | 401016 |
| 30 | 463760 |
| 31 | 534072 |
| 32 | 612612 |
| 33 | 700077 |
| 34 | 797202 |
| 35 | 904761 |