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 | 6 |
| 2 | 51 |
| 3 | 123 |
| 4 | 291 |
| 5 | 843 |
| 6 | 1371 |
| 7 | 1851 |
| 8 | 2811 |
| 9 | 5331 |
| 10 | 6243 |
| 11 | 6891 |
| 12 | 9411 |
| 13 | 18771 |
| 14 | 36483 |
| 15 | 54291 |
| 16 | 63003 |
| 17 | 69171 |
| 18 | 72363 |
| 19 | 73443 |
| 20 | 76731 |
| 21 | 78963 |
| 22 | 128883 |
| 23 | 143643 |
| 24 | 151323 |
| 25 | 187491 |
| 26 | 212523 |
| 27 | 229443 |
| 28 | 271443 |
| 29 | 292683 |
| 30 | 332931 |
| 31 | 361203 |
| 32 | 398163 |
| 33 | 418611 |
| 34 | 458331 |
| 35 | 477483 |
| 36 | 516963 |