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 | 15 |
| 2 | 78 |
| 3 | 189 |
| 4 | 348 |
| 5 | 555 |
| 6 | 810 |
| 7 | 1113 |
| 8 | 1464 |
| 9 | 1863 |
| 10 | 2310 |
| 11 | 2805 |
| 12 | 3348 |
| 13 | 3939 |
| 14 | 4578 |
| 15 | 5265 |
| 16 | 6000 |
| 17 | 6783 |
| 18 | 7614 |
| 19 | 8493 |
| 20 | 9420 |
| 21 | 10395 |
| 22 | 11418 |
| 23 | 12489 |
| 24 | 13608 |
| 25 | 14775 |
| 26 | 15990 |
| 27 | 17253 |
| 28 | 18564 |
| 29 | 19923 |
| 30 | 21330 |
| 31 | 22785 |
| 32 | 24288 |
| 33 | 25839 |
| 34 | 27438 |
| 35 | 29085 |
| 36 | 30780 |
| 37 | 32523 |
| 38 | 34314 |
| 39 | 36153 |
| 40 | 38040 |
| 41 | 39975 |
| 42 | 41958 |
| 43 | 43989 |