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 | 65 |
| 3 | 133 |
| 4 | 341 |
| 5 | 481 |
| 6 | 1541 |
| 7 | 4033 |
| 8 | 5461 |
| 9 | 6533 |
| 10 | 8321 |
| 11 | 11041 |
| 12 | 13333 |
| 13 | 14981 |
| 14 | 31621 |
| 15 | 38081 |
| 16 | 48133 |
| 17 | 56033 |
| 18 | 79381 |
| 19 | 83333 |
| 20 | 97921 |
| 21 | 109061 |
| 22 | 111361 |
| 23 | 133141 |
| 24 | 188501 |
| 25 | 197633 |
| 26 | 206981 |
| 27 | 219781 |
| 28 | 229633 |
| 29 | 256961 |
| 30 | 282133 |
| 31 | 293281 |
| 32 | 328021 |
| 33 | 340033 |
| 34 | 360533 |
| 35 | 416641 |
| 36 | 481601 |
| 37 | 556421 |