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 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 8 |
| 5 | 16 |
| 6 | 32 |
| 7 | 64 |
| 8 | 128 |
| 9 | 256 |
| 10 | 511 |
| 11 | 1022 |
| 12 | 2042 |
| 13 | 4081 |
| 14 | 8156 |
| 15 | 16300 |
| 16 | 32576 |
| 17 | 65104 |
| 18 | 130112 |
| 19 | 260032 |
| 20 | 519681 |
| 21 | 1038595 |
| 22 | 2075660 |
| 23 | 4148259 |
| 24 | 8290402 |
| 25 | 16568581 |
| 26 | 33112734 |
| 27 | 66176648 |
| 28 | 132255728 |
| 29 | 264316464 |
| 30 | 528243231 |
| 31 | 1055707644 |
| 32 | 2109858797 |
| 33 | 4216606912 |
| 34 | 8426997041 |
| 35 | 16841569684 |
| 36 | 33658308890 |
| 37 | 67266993433 |