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 | 1 |
| 2 | 3 |
| 3 | 11 |
| 4 | 22 |
| 5 | 73 |
| 6 | 115 |
| 7 | 341 |
| 8 | 545 |
| 9 | 1141 |
| 10 | 1864 |
| 11 | 4849 |
| 12 | 6505 |
| 13 | 16285 |
| 14 | 26245 |
| 15 | 47093 |
| 16 | 68981 |
| 17 | 163937 |
| 18 | 221957 |
| 19 | 517937 |
| 20 | 726737 |
| 21 | 1312865 |
| 22 | 2093745 |
| 23 | 4753105 |
| 24 | 5953777 |
| 25 | 12335601 |
| 26 | 19516365 |
| 27 | 34112821 |
| 28 | 48603289 |
| 29 | 107522689 |
| 30 | 137759953 |
| 31 | 302797921 |
| 32 | 422868865 |