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 | 14 |
| 3 | 138 |
| 4 | 640 |
| 5 | 2190 |
| 6 | 6042 |
| 7 | 13824 |
| 8 | 28400 |
| 9 | 53484 |
| 10 | 94126 |
| 11 | 156462 |
| 12 | 248568 |
| 13 | 380802 |
| 14 | 564242 |
| 15 | 813528 |
| 16 | 1146472 |
| 17 | 1581936 |
| 18 | 2143878 |
| 19 | 2857194 |
| 20 | 3749240 |
| 21 | 4854942 |
| 22 | 6210442 |
| 23 | 7856340 |
| 24 | 9832056 |
| 25 | 12194784 |
| 26 | 15002678 |
| 27 | 18312486 |
| 28 | 22183672 |
| 29 | 26693382 |
| 30 | 31909362 |
| 31 | 37916916 |
| 32 | 44802728 |