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) |
|---|---|
| 0 | 5 |
| 1 | 21 |
| 2 | 45 |
| 3 | 81 |
| 4 | 137 |
| 5 | 193 |
| 6 | 277 |
| 7 | 357 |
| 8 | 457 |
| 9 | 577 |
| 10 | 697 |
| 11 | 845 |
| 12 | 981 |
| 13 | 1153 |
| 14 | 1321 |
| 15 | 1505 |
| 16 | 1725 |
| 17 | 1933 |
| 18 | 2161 |
| 19 | 2393 |
| 20 | 2629 |
| 21 | 2917 |
| 22 | 3181 |
| 23 | 3489 |
| 24 | 3769 |
| 25 | 4093 |
| 26 | 4421 |
| 27 | 4741 |
| 28 | 5129 |
| 29 | 5465 |
| 30 | 5853 |
| 31 | 6237 |
| 32 | 6621 |
| 33 | 7049 |
| 34 | 7473 |
| 35 | 7917 |
| 36 | 8389 |
| 37 | 8841 |
| 38 | 9329 |
| 39 | 9785 |