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 | 1 |
| 3 | 3 |
| 4 | 7 |
| 5 | 17 |
| 6 | 33 |
| 7 | 75 |
| 8 | 139 |
| 9 | 289 |
| 10 | 557 |
| 11 | 1119 |
| 12 | 2143 |
| 13 | 4341 |
| 14 | 8437 |
| 15 | 16843 |
| 16 | 33343 |
| 17 | 66573 |
| 18 | 132109 |
| 19 | 264243 |
| 20 | 526387 |
| 21 | 1052549 |
| 22 | 2101617 |
| 23 | 4202031 |
| 24 | 8396335 |
| 25 | 16792705 |
| 26 | 33570193 |
| 27 | 67137403 |
| 28 | 134248191 |
| 29 | 268492033 |
| 30 | 536927489 |
| 31 | 1073853307 |
| 32 | 2147595131 |
| 33 | 4295180241 |
| 34 | 8590155085 |