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 | 126 |
| 1 | 125 |
| 2 | 123 |
| 3 | 119 |
| 4 | 111 |
| 5 | 95 |
| 6 | 63 |
| 7 | 1 |
| 8 | 129 |
| 9 | 385 |
| 10 | 897 |
| 11 | 1921 |
| 12 | 3969 |
| 13 | 8065 |
| 14 | 16257 |
| 15 | 32641 |
| 16 | 65409 |
| 17 | 130945 |
| 18 | 262017 |
| 19 | 524161 |
| 20 | 1048449 |
| 21 | 2097025 |
| 22 | 4194177 |
| 23 | 8388481 |
| 24 | 16777089 |
| 25 | 33554305 |
| 26 | 67108737 |
| 27 | 134217601 |
| 28 | 268435329 |
| 29 | 536870785 |
| 30 | 1073741697 |
| 31 | 2147483521 |
| 32 | 4294967169 |