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 | 4 |
| 2 | 6 |
| 3 | 8 |
| 4 | 9 |
| 5 | 16 |
| 6 | 27 |
| 7 | 36 |
| 8 | 78 |
| 9 | 81 |
| 10 | 102 |
| 11 | 114 |
| 12 | 144 |
| 13 | 270 |
| 14 | 420 |
| 15 | 480 |
| 16 | 750 |
| 17 | 1848 |
| 18 | 2382 |
| 19 | 2940 |
| 20 | 13860 |
| 21 | 14490 |
| 22 | 14520 |
| 23 | 21840 |
| 24 | 31860 |
| 25 | 33660 |
| 26 | 44580 |
| 27 | 80850 |
| 28 | 1228080 |
| 29 | 4305210 |
| 30 | 5326860 |
| 31 | 6846840 |
| 32 | 9796710 |
| 33 | 9990750 |
| 34 | 10720710 |
| 35 | 14910630 |
| 36 | 15129510 |
| 37 | 15278250 |
| 38 | 16785090 |
| 39 | 17022390 |
| 40 | 17608500 |