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 | 3 |
| 2 | 7 |
| 3 | 25 |
| 4 | 41 |
| 5 | 45 |
| 6 | 63 |
| 7 | 83 |
| 8 | 131 |
| 9 | 147 |
| 10 | 175 |
| 11 | 425 |
| 12 | 449 |
| 13 | 469 |
| 14 | 651 |
| 15 | 1345 |
| 16 | 1839 |
| 17 | 1883 |
| 18 | 1913 |
| 19 | 2177 |
| 20 | 2551 |
| 21 | 2907 |
| 22 | 3675 |
| 23 | 6071 |
| 24 | 11743 |
| 25 | 14641 |
| 26 | 38685 |
| 27 | 40857 |
| 28 | 47761 |
| 29 | 97243 |