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 | 44 |
| 5 | 82 |
| 6 | 142 |
| 7 | 230 |
| 8 | 355 |
| 9 | 525 |
| 10 | 751 |
| 11 | 1043 |
| 12 | 1414 |
| 13 | 1876 |
| 14 | 2444 |
| 15 | 3132 |
| 16 | 3957 |
| 17 | 4935 |
| 18 | 6085 |
| 19 | 7425 |
| 20 | 8976 |
| 21 | 10758 |
| 22 | 12794 |
| 23 | 15106 |
| 24 | 17719 |
| 25 | 20657 |
| 26 | 23947 |
| 27 | 27615 |
| 28 | 31690 |
| 29 | 36200 |
| 30 | 41176 |
| 31 | 46648 |
| 32 | 52649 |
| 33 | 59211 |
| 34 | 66369 |
| 35 | 74157 |
| 36 | 82612 |
| 37 | 91770 |
| 38 | 101670 |
| 39 | 112350 |
| 40 | 123851 |