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 | -242 |
| 1 | -241 |
| 2 | -239 |
| 3 | -235 |
| 4 | -227 |
| 5 | -211 |
| 6 | -179 |
| 7 | -115 |
| 8 | 13 |
| 9 | 269 |
| 10 | 781 |
| 11 | 1805 |
| 12 | 3853 |
| 13 | 7949 |
| 14 | 16141 |
| 15 | 32525 |
| 16 | 65293 |
| 17 | 130829 |
| 18 | 261901 |
| 19 | 524045 |
| 20 | 1048333 |
| 21 | 2096909 |
| 22 | 4194061 |
| 23 | 8388365 |
| 24 | 16776973 |
| 25 | 33554189 |
| 26 | 67108621 |
| 27 | 134217485 |
| 28 | 268435213 |
| 29 | 536870669 |
| 30 | 1073741581 |
| 31 | 2147483405 |
| 32 | 4294967053 |