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 | 3 |
| 1 | 18 |
| 2 | 42 |
| 3 | 84 |
| 4 | 126 |
| 5 | 189 |
| 6 | 249 |
| 7 | 333 |
| 8 | 426 |
| 9 | 546 |
| 10 | 642 |
| 11 | 768 |
| 12 | 882 |
| 13 | 1068 |
| 14 | 1200 |
| 15 | 1368 |
| 16 | 1539 |
| 17 | 1749 |
| 18 | 1965 |
| 19 | 2175 |
| 20 | 2361 |
| 21 | 2616 |
| 22 | 2820 |
| 23 | 3156 |
| 24 | 3378 |
| 25 | 3678 |
| 26 | 3918 |
| 27 | 4212 |
| 28 | 4536 |
| 29 | 4908 |
| 30 | 5244 |
| 31 | 5580 |
| 32 | 5874 |
| 33 | 6339 |
| 34 | 6651 |
| 35 | 7029 |
| 36 | 7359 |
| 37 | 7863 |
| 38 | 8295 |
| 39 | 8715 |
| 40 | 9114 |
| 41 | 9594 |
| 42 | 9978 |
| 43 | 10566 |
| 44 | 11046 |
| 45 | 11604 |
| 46 | 12024 |
| 47 | 12528 |