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 | 21 |
| 2 | 67 |
| 3 | 139 |
| 4 | 237 |
| 5 | 361 |
| 6 | 511 |
| 7 | 687 |
| 8 | 889 |
| 9 | 1117 |
| 10 | 1371 |
| 11 | 1651 |
| 12 | 1957 |
| 13 | 2289 |
| 14 | 2647 |
| 15 | 3031 |
| 16 | 3441 |
| 17 | 3877 |
| 18 | 4339 |
| 19 | 4827 |
| 20 | 5341 |
| 21 | 5881 |
| 22 | 6447 |
| 23 | 7039 |
| 24 | 7657 |
| 25 | 8301 |
| 26 | 8971 |
| 27 | 9667 |
| 28 | 10389 |
| 29 | 11137 |
| 30 | 11911 |
| 31 | 12711 |
| 32 | 13537 |
| 33 | 14389 |
| 34 | 15267 |
| 35 | 16171 |
| 36 | 17101 |
| 37 | 18057 |
| 38 | 19039 |
| 39 | 20047 |
| 40 | 21081 |
| 41 | 22141 |
| 42 | 23227 |