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 | 6 |
| 3 | 15 |
| 4 | 30 |
| 5 | 48 |
| 6 | 78 |
| 7 | 123 |
| 8 | 174 |
| 9 | 237 |
| 10 | 312 |
| 11 | 393 |
| 12 | 489 |
| 13 | 606 |
| 14 | 735 |
| 15 | 879 |
| 16 | 1047 |
| 17 | 1227 |
| 18 | 1419 |
| 19 | 1626 |
| 20 | 1848 |
| 21 | 2091 |
| 22 | 2346 |
| 23 | 2616 |
| 24 | 2901 |
| 25 | 3198 |
| 26 | 3516 |
| 27 | 3849 |
| 28 | 4206 |
| 29 | 4575 |
| 30 | 4965 |
| 31 | 5379 |
| 32 | 5817 |
| 33 | 6276 |
| 34 | 6756 |
| 35 | 7260 |
| 36 | 7779 |
| 37 | 8328 |
| 38 | 8898 |
| 39 | 9501 |
| 40 | 10119 |
| 41 | 10749 |
| 42 | 11400 |
| 43 | 12057 |
| 44 | 12729 |
| 45 | 13422 |