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 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 0 |
| 10 | 1 |
| 11 | 1 |
| 12 | 1 |
| 13 | 1 |
| 14 | 1 |
| 15 | 1 |
| 16 | 1 |
| 17 | 1 |
| 18 | 1 |
| 19 | 1 |
| 20 | 184757 |
| 21 | 705433 |
| 22 | 1998725 |
| 23 | 4992289 |
| 24 | 11618957 |
| 25 | 25852921 |
| 26 | 55791791 |
| 27 | 117832681 |
| 28 | 245039011 |
| 29 | 503891821 |
| 30 | 5552024604991 |
| 31 | 46933238932021 |
| 32 | 261680950107511 |
| 33 | 1205121760579981 |
| 34 | 4959685199012641 |
| 35 | 18947093053200193 |