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 | 331 |
| 3 | 2971 |
| 4 | 4421 |
| 5 | 4861 |
| 6 | 5309 |
| 7 | 5441 |
| 8 | 20431 |
| 9 | 22381 |
| 10 | 23459 |
| 11 | 28151 |
| 12 | 33911 |
| 13 | 37061 |
| 14 | 37699 |
| 15 | 47491 |
| 16 | 66449 |
| 17 | 75821 |
| 18 | 82799 |
| 19 | 83701 |
| 20 | 86131 |
| 21 | 91961 |
| 22 | 106621 |
| 23 | 110059 |
| 24 | 112289 |
| 25 | 130811 |
| 26 | 134669 |
| 27 | 135461 |
| 28 | 141601 |
| 29 | 144461 |
| 30 | 152959 |
| 31 | 153701 |
| 32 | 167311 |
| 33 | 167759 |
| 34 | 171049 |