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) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 8 |
| 3 | 9 |
| 4 | 64 |
| 5 | 65 |
| 6 | 72 |
| 7 | 73 |
| 8 | 512 |
| 9 | 513 |
| 10 | 520 |
| 11 | 521 |
| 12 | 576 |
| 13 | 577 |
| 14 | 584 |
| 15 | 585 |
| 16 | 4096 |
| 17 | 4097 |
| 18 | 4104 |
| 19 | 4105 |
| 20 | 4160 |
| 21 | 4161 |
| 22 | 4168 |
| 23 | 4169 |
| 24 | 4608 |
| 25 | 4609 |
| 26 | 4616 |
| 27 | 4617 |
| 28 | 4672 |
| 29 | 4673 |
| 30 | 4680 |
| 31 | 4681 |
| 32 | 32768 |
| 33 | 32769 |
| 34 | 32776 |
| 35 | 32777 |
| 36 | 32832 |
| 37 | 32833 |
| 38 | 32840 |
| 39 | 32841 |
| 40 | 33280 |
| 41 | 33281 |
| 42 | 33288 |