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 | 1 |
| 1 | 3 |
| 2 | 9 |
| 3 | 21 |
| 4 | 42 |
| 5 | 67 |
| 6 | 109 |
| 7 | 145 |
| 8 | 207 |
| 9 | 255 |
| 10 | 337 |
| 11 | 397 |
| 12 | 499 |
| 13 | 571 |
| 14 | 693 |
| 15 | 777 |
| 16 | 919 |
| 17 | 1015 |
| 18 | 1177 |
| 19 | 1285 |
| 20 | 1467 |
| 21 | 1587 |
| 22 | 1789 |
| 23 | 1921 |
| 24 | 2143 |
| 25 | 2287 |
| 26 | 2529 |
| 27 | 2685 |
| 28 | 2947 |
| 29 | 3115 |
| 30 | 3397 |
| 31 | 3577 |
| 32 | 3879 |
| 33 | 4071 |
| 34 | 4393 |
| 35 | 4597 |
| 36 | 4939 |
| 37 | 5155 |
| 38 | 5517 |
| 39 | 5745 |
| 40 | 6127 |
| 41 | 6367 |
| 42 | 6769 |
| 43 | 7021 |
| 44 | 7443 |
| 45 | 7707 |
| 46 | 8149 |
| 47 | 8425 |