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 | 30 |
| 2 | 42 |
| 3 | 102 |
| 4 | 462 |
| 5 | 2130 |
| 6 | 2802 |
| 7 | 3930 |
| 8 | 5658 |
| 9 | 6198 |
| 10 | 6270 |
| 11 | 6870 |
| 12 | 7458 |
| 13 | 7590 |
| 14 | 8970 |
| 15 | 9042 |
| 16 | 9858 |
| 17 | 10302 |
| 18 | 11490 |
| 19 | 11778 |
| 20 | 13710 |
| 21 | 13722 |
| 22 | 13998 |
| 23 | 14322 |
| 24 | 17490 |
| 25 | 17790 |
| 26 | 18042 |
| 27 | 19470 |
| 28 | 20478 |
| 29 | 22278 |
| 30 | 22962 |
| 31 | 23910 |
| 32 | 25998 |
| 33 | 29670 |
| 34 | 30390 |
| 35 | 31722 |
| 36 | 32190 |
| 37 | 32370 |
| 38 | 32610 |
| 39 | 32802 |
| 40 | 32910 |
| 41 | 33330 |