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 | 0 |
| 2 | 2 |
| 3 | 7 |
| 4 | 18 |
| 5 | 36 |
| 6 | 64 |
| 7 | 103 |
| 8 | 156 |
| 9 | 224 |
| 10 | 310 |
| 11 | 415 |
| 12 | 542 |
| 13 | 692 |
| 14 | 868 |
| 15 | 1071 |
| 16 | 1304 |
| 17 | 1568 |
| 18 | 1866 |
| 19 | 2199 |
| 20 | 2570 |
| 21 | 2980 |
| 22 | 3432 |
| 23 | 3927 |
| 24 | 4468 |
| 25 | 5056 |
| 26 | 5694 |
| 27 | 6383 |
| 28 | 7126 |
| 29 | 7924 |
| 30 | 8780 |
| 31 | 9695 |
| 32 | 10672 |
| 33 | 11712 |
| 34 | 12818 |
| 35 | 13991 |
| 36 | 15234 |
| 37 | 16548 |
| 38 | 17936 |
| 39 | 19399 |
| 40 | 20940 |
| 41 | 22560 |