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 | 2 |
| 3 | 4 |
| 4 | 8 |
| 5 | 9 |
| 6 | 17 |
| 7 | 19 |
| 8 | 35 |
| 9 | 39 |
| 10 | 71 |
| 11 | 79 |
| 12 | 143 |
| 13 | 159 |
| 14 | 287 |
| 15 | 319 |
| 16 | 575 |
| 17 | 639 |
| 18 | 1151 |
| 19 | 1279 |
| 20 | 2303 |
| 21 | 2559 |
| 22 | 4607 |
| 23 | 5119 |
| 24 | 9215 |
| 25 | 10239 |
| 26 | 18431 |
| 27 | 20479 |
| 28 | 36863 |
| 29 | 40959 |
| 30 | 73727 |
| 31 | 81919 |
| 32 | 147455 |
| 33 | 163839 |
| 34 | 294911 |
| 35 | 327679 |
| 36 | 589823 |
| 37 | 655359 |
| 38 | 1179647 |
| 39 | 1310719 |
| 40 | 2359295 |
| 41 | 2621439 |
| 42 | 4718591 |
| 43 | 5242879 |
| 44 | 9437183 |
| 45 | 10485759 |