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 | 3 |
| 4 | 5 |
| 5 | 11 |
| 6 | 22 |
| 7 | 44 |
| 8 | 88 |
| 9 | 177 |
| 10 | 355 |
| 11 | 710 |
| 12 | 1419 |
| 13 | 2838 |
| 14 | 5679 |
| 15 | 11363 |
| 16 | 22727 |
| 17 | 45443 |
| 18 | 90862 |
| 19 | 181703 |
| 20 | 363419 |
| 21 | 726903 |
| 22 | 1453875 |
| 23 | 2907667 |
| 24 | 5814880 |
| 25 | 11628864 |
| 26 | 23256828 |
| 27 | 46513965 |
| 28 | 93031069 |
| 29 | 186068503 |
| 30 | 372142797 |
| 31 | 744280096 |
| 32 | 1488527555 |
| 33 | 2976987042 |
| 34 | 5953897971 |
| 35 | 11907811651 |