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) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 4 |
| 6 | 8 |
| 7 | 16 |
| 8 | 32 |
| 9 | 64 |
| 10 | 127 |
| 11 | 253 |
| 12 | 505 |
| 13 | 1008 |
| 14 | 2012 |
| 15 | 4016 |
| 16 | 8016 |
| 17 | 16000 |
| 18 | 31936 |
| 19 | 63744 |
| 20 | 127234 |
| 21 | 253961 |
| 22 | 506910 |
| 23 | 1011800 |
| 24 | 2019568 |
| 25 | 4031088 |
| 26 | 8046112 |
| 27 | 16060160 |
| 28 | 32056322 |
| 29 | 63984903 |
| 30 | 127714833 |
| 31 | 254920736 |
| 32 | 508825640 |
| 33 | 1015623664 |
| 34 | 2027200176 |
| 35 | 4046322176 |
| 36 | 8076520194 |