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) |
|---|---|
| 0 | 1 |
| 1 | 27 |
| 2 | 75 |
| 3 | 147 |
| 4 | 243 |
| 5 | 363 |
| 6 | 483 |
| 7 | 651 |
| 8 | 819 |
| 9 | 1011 |
| 10 | 1179 |
| 11 | 1443 |
| 12 | 1683 |
| 13 | 1995 |
| 14 | 2211 |
| 15 | 2475 |
| 16 | 2763 |
| 17 | 3171 |
| 18 | 3459 |
| 19 | 3915 |
| 20 | 4251 |
| 21 | 4611 |
| 22 | 4923 |
| 23 | 5475 |
| 24 | 5883 |
| 25 | 6411 |
| 26 | 6771 |
| 27 | 7275 |
| 28 | 7707 |
| 29 | 8403 |
| 30 | 8811 |
| 31 | 9555 |
| 32 | 10059 |
| 33 | 10611 |
| 34 | 11067 |
| 35 | 11715 |
| 36 | 12291 |
| 37 | 13179 |
| 38 | 13683 |
| 39 | 14331 |
| 40 | 14931 |
| 41 | 15915 |
| 42 | 16419 |