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 | 31 |
| 3 | 41 |
| 4 | 61 |
| 5 | 97 |
| 6 | 169 |
| 7 | 305 |
| 8 | 577 |
| 9 | 1105 |
| 10 | 2161 |
| 11 | 4241 |
| 12 | 8401 |
| 13 | 16657 |
| 14 | 33169 |
| 15 | 66065 |
| 16 | 131857 |
| 17 | 263185 |
| 18 | 525841 |
| 19 | 1050641 |
| 20 | 2100241 |
| 21 | 4198417 |
| 22 | 8394769 |
| 23 | 16785425 |
| 24 | 33566737 |
| 25 | 67125265 |
| 26 | 134242321 |
| 27 | 268468241 |
| 28 | 536920081 |
| 29 | 1073807377 |
| 30 | 2147581969 |
| 31 | 4295098385 |