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 | 12 |
| 2 | 77 |
| 3 | 352 |
| 4 | 1286 |
| 5 | 3992 |
| 6 | 10933 |
| 7 | 27092 |
| 8 | 61841 |
| 9 | 131768 |
| 10 | 264759 |
| 11 | 505660 |
| 12 | 923857 |
| 13 | 1623104 |
| 14 | 2753895 |
| 15 | 4528612 |
| 16 | 7239585 |
| 17 | 11280072 |
| 18 | 17168009 |
| 19 | 25572196 |
| 20 | 37340381 |
| 21 | 53528488 |
| 22 | 75430016 |
| 23 | 104604424 |
| 24 | 142903123 |
| 25 | 192491532 |
| 26 | 255865533 |
| 27 | 335860592 |
| 28 | 435651810 |
| 29 | 558743240 |
| 30 | 708944960 |