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 | 1 |
| 2 | 3 |
| 3 | 18 |
| 4 | 105 |
| 5 | 135 |
| 6 | 153 |
| 7 | 165 |
| 8 | 168 |
| 9 | 300 |
| 10 | 363 |
| 11 | 585 |
| 12 | 618 |
| 13 | 648 |
| 14 | 765 |
| 15 | 828 |
| 16 | 1110 |
| 17 | 1140 |
| 18 | 1278 |
| 19 | 1518 |
| 20 | 1530 |
| 21 | 1533 |
| 22 | 2130 |
| 23 | 2223 |
| 24 | 2400 |
| 25 | 2475 |
| 26 | 2613 |
| 27 | 2790 |
| 28 | 2925 |
| 29 | 3075 |
| 30 | 3180 |
| 31 | 3345 |
| 32 | 3420 |
| 33 | 3483 |
| 34 | 3810 |
| 35 | 3840 |
| 36 | 3843 |
| 37 | 3933 |
| 38 | 4008 |
| 39 | 4083 |
| 40 | 4095 |
| 41 | 4143 |
| 42 | 4260 |
| 43 | 4263 |
| 44 | 4323 |
| 45 | 4470 |
| 46 | 4545 |