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 | 257 |
| 2 | 449 |
| 3 | 641 |
| 4 | 1217 |
| 5 | 1409 |
| 6 | 1601 |
| 7 | 2753 |
| 8 | 3137 |
| 9 | 3329 |
| 10 | 4289 |
| 11 | 4481 |
| 12 | 4673 |
| 13 | 5441 |
| 14 | 6977 |
| 15 | 7937 |
| 16 | 8513 |
| 17 | 9281 |
| 18 | 9473 |
| 19 | 9857 |
| 20 | 10433 |
| 21 | 11393 |
| 22 | 11777 |
| 23 | 11969 |
| 24 | 12161 |
| 25 | 13121 |
| 26 | 13313 |
| 27 | 13697 |
| 28 | 14081 |
| 29 | 14657 |
| 30 | 15233 |
| 31 | 15809 |
| 32 | 16001 |
| 33 | 16193 |
| 34 | 17729 |
| 35 | 17921 |
| 36 | 19073 |
| 37 | 19457 |
| 38 | 19841 |
| 39 | 21377 |
| 40 | 21569 |