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 | 31 |
| 2 | 127 |
| 3 | 367 |
| 4 | 967 |
| 5 | 3727 |
| 6 | 6247 |
| 7 | 7927 |
| 8 | 11887 |
| 9 | 17167 |
| 10 | 22807 |
| 11 | 39607 |
| 12 | 72367 |
| 13 | 109567 |
| 14 | 160807 |
| 15 | 185767 |
| 16 | 323767 |
| 17 | 502687 |
| 18 | 737887 |
| 19 | 863047 |
| 20 | 885487 |
| 21 | 942847 |
| 22 | 982087 |
| 23 | 1079527 |
| 24 | 1560007 |
| 25 | 1739767 |
| 26 | 1852327 |
| 27 | 1985287 |
| 28 | 2105407 |
| 29 | 2343967 |
| 30 | 2399407 |