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 | 1023 |
| 12 | 2036 |
| 13 | 4072 |
| 14 | 8089 |
| 15 | 16123 |
| 16 | 31971 |
| 17 | 63447 |
| 18 | 125464 |
| 19 | 247848 |
| 20 | 488248 |
| 21 | 959954 |
| 22 | 1882518 |
| 23 | 3682966 |
| 24 | 7186687 |
| 25 | 13987505 |
| 26 | 27151374 |
| 27 | 52561888 |
| 28 | 101473646 |
| 29 | 195352782 |
| 30 | 375197136 |
| 31 | 718154110 |
| 32 | 1370815210 |
| 33 | 2611751010 |
| 34 | 4957566835 |