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 | 6 |
| 1 | 1 |
| 2 | 3 |
| 3 | 7 |
| 4 | 15 |
| 5 | 31 |
| 6 | 63 |
| 7 | 120 |
| 8 | 239 |
| 9 | 475 |
| 10 | 943 |
| 11 | 1871 |
| 12 | 3711 |
| 13 | 7359 |
| 14 | 14598 |
| 15 | 28957 |
| 16 | 57439 |
| 17 | 113935 |
| 18 | 225999 |
| 19 | 448287 |
| 20 | 889215 |
| 21 | 1763832 |
| 22 | 3498707 |
| 23 | 6939975 |
| 24 | 13766015 |
| 25 | 27306031 |
| 26 | 54163775 |
| 27 | 107438335 |
| 28 | 213112838 |
| 29 | 422726969 |
| 30 | 838513963 |
| 31 | 1663261911 |
| 32 | 3299217791 |
| 33 | 6544271807 |