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) |
|---|---|
| 1 | 1 |
| 2 | 5 |
| 3 | 11 |
| 4 | 17 |
| 5 | 39 |
| 6 | 93 |
| 7 | 183 |
| 8 | 373 |
| 9 | 823 |
| 10 | 1741 |
| 11 | 3599 |
| 12 | 7637 |
| 13 | 16247 |
| 14 | 34125 |
| 15 | 71871 |
| 16 | 152133 |
| 17 | 321127 |
| 18 | 676861 |
| 19 | 1429135 |
| 20 | 3017909 |
| 21 | 6367607 |
| 22 | 13437869 |
| 23 | 28367775 |
| 24 | 59874021 |
| 25 | 126360711 |
| 26 | 266707549 |
| 27 | 562939183 |
| 28 | 1188130069 |
| 29 | 2507681687 |
| 30 | 5292853517 |