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 | 3 |
| 2 | 18 |
| 3 | 63 |
| 4 | 144 |
| 5 | 285 |
| 6 | 486 |
| 7 | 777 |
| 8 | 1152 |
| 9 | 1647 |
| 10 | 2250 |
| 11 | 3003 |
| 12 | 3888 |
| 13 | 4953 |
| 14 | 6174 |
| 15 | 7605 |
| 16 | 9216 |
| 17 | 11067 |
| 18 | 13122 |
| 19 | 15447 |
| 20 | 18000 |
| 21 | 20853 |
| 22 | 23958 |
| 23 | 27393 |
| 24 | 31104 |
| 25 | 35175 |
| 26 | 39546 |
| 27 | 44307 |
| 28 | 49392 |
| 29 | 54897 |
| 30 | 60750 |
| 31 | 67053 |
| 32 | 73728 |
| 33 | 80883 |
| 34 | 88434 |
| 35 | 96495 |
| 36 | 104976 |
| 37 | 113997 |
| 38 | 123462 |
| 39 | 133497 |
| 40 | 144000 |