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 | 5 |
| 3 | 15 |
| 4 | 25 |
| 5 | 55 |
| 6 | 125 |
| 7 | 205 |
| 8 | 385 |
| 9 | 465 |
| 10 | 635 |
| 11 | 645 |
| 12 | 715 |
| 13 | 1095 |
| 14 | 1145 |
| 15 | 1175 |
| 16 | 1245 |
| 17 | 1275 |
| 18 | 1315 |
| 19 | 1375 |
| 20 | 1565 |
| 21 | 1615 |
| 22 | 1675 |
| 23 | 1685 |
| 24 | 1965 |
| 25 | 2055 |
| 26 | 2085 |
| 27 | 2095 |
| 28 | 2405 |
| 29 | 2455 |
| 30 | 2535 |
| 31 | 2665 |
| 32 | 2835 |
| 33 | 2925 |
| 34 | 3135 |
| 35 | 3305 |
| 36 | 3535 |
| 37 | 3755 |
| 38 | 3775 |
| 39 | 4025 |
| 40 | 4155 |
| 41 | 4175 |
| 42 | 4365 |
| 43 | 4605 |
| 44 | 4615 |
| 45 | 4735 |
| 46 | 4785 |