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 | 4 |
| 4 | 6 |
| 5 | 14 |
| 6 | 28 |
| 7 | 59 |
| 8 | 117 |
| 9 | 239 |
| 10 | 484 |
| 11 | 980 |
| 12 | 1973 |
| 13 | 3973 |
| 14 | 7989 |
| 15 | 16054 |
| 16 | 32227 |
| 17 | 64653 |
| 18 | 129628 |
| 19 | 259787 |
| 20 | 520440 |
| 21 | 1042305 |
| 22 | 2086938 |
| 23 | 4177680 |
| 24 | 8361557 |
| 25 | 16733221 |
| 26 | 33482909 |
| 27 | 66992641 |
| 28 | 134028938 |
| 29 | 268128902 |
| 30 | 536373288 |
| 31 | 1072934271 |
| 32 | 2146173471 |
| 33 | 4292842170 |
| 34 | 8586488355 |