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 | 25 |
| 2 | 27 |
| 3 | 30 |
| 4 | 36 |
| 5 | 46 |
| 6 | 66 |
| 7 | 102 |
| 8 | 174 |
| 9 | 310 |
| 10 | 582 |
| 11 | 1110 |
| 12 | 2166 |
| 13 | 4246 |
| 14 | 8406 |
| 15 | 16662 |
| 16 | 33174 |
| 17 | 66070 |
| 18 | 131862 |
| 19 | 263190 |
| 20 | 525846 |
| 21 | 1050646 |
| 22 | 2100246 |
| 23 | 4198422 |
| 24 | 8394774 |
| 25 | 16785430 |
| 26 | 33566742 |
| 27 | 67125270 |
| 28 | 134242326 |
| 29 | 268468246 |
| 30 | 536920086 |
| 31 | 1073807382 |
| 32 | 2147581974 |
| 33 | 4295098390 |