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 | 3 |
| 3 | 6 |
| 4 | 36 |
| 5 | 66 |
| 6 | 300 |
| 7 | 630 |
| 8 | 666 |
| 9 | 903 |
| 10 | 990 |
| 11 | 3003 |
| 12 | 6903 |
| 13 | 33930 |
| 14 | 39060 |
| 15 | 39903 |
| 16 | 63903 |
| 17 | 66066 |
| 18 | 69006 |
| 19 | 93096 |
| 20 | 306936 |
| 21 | 333336 |
| 22 | 339900 |
| 23 | 600060 |
| 24 | 609960 |
| 25 | 630003 |
| 26 | 669903 |
| 27 | 690900 |
| 28 | 833986 |
| 29 | 930930 |
| 30 | 936396 |
| 31 | 963966 |
| 32 | 3036880 |
| 33 | 3069003 |
| 34 | 3083886 |
| 35 | 3306306 |
| 36 | 3689686 |
| 37 | 3966336 |
| 38 | 3988900 |