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 | 0 |
| 1 | 3 |
| 2 | 6 |
| 3 | 21 |
| 4 | 24 |
| 5 | 48 |
| 6 | 63 |
| 7 | 126 |
| 8 | 213 |
| 9 | 237 |
| 10 | 297 |
| 11 | 318 |
| 12 | 402 |
| 13 | 609 |
| 14 | 657 |
| 15 | 714 |
| 16 | 783 |
| 17 | 864 |
| 18 | 948 |
| 19 | 1053 |
| 20 | 1287 |
| 21 | 1347 |
| 22 | 1449 |
| 23 | 1581 |
| 24 | 1683 |
| 25 | 2166 |
| 26 | 2184 |
| 27 | 2358 |
| 28 | 2457 |
| 29 | 2463 |
| 30 | 2481 |
| 31 | 2736 |
| 32 | 2793 |
| 33 | 2898 |
| 34 | 2919 |
| 35 | 3024 |
| 36 | 3723 |
| 37 | 3786 |
| 38 | 3909 |
| 39 | 4017 |
| 40 | 4479 |
| 41 | 4584 |
| 42 | 4602 |
| 43 | 4857 |
| 44 | 5169 |
| 45 | 5634 |
| 46 | 5733 |
| 47 | 7101 |