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 | 3 |
| 2 | 8 |
| 3 | 17 |
| 4 | 32 |
| 5 | 66 |
| 6 | 130 |
| 7 | 262 |
| 8 | 522 |
| 9 | 1046 |
| 10 | 2090 |
| 11 | 4182 |
| 12 | 8362 |
| 13 | 16726 |
| 14 | 33450 |
| 15 | 66902 |
| 16 | 133802 |
| 17 | 267606 |
| 18 | 535210 |
| 19 | 1070422 |
| 20 | 2140842 |
| 21 | 4281686 |
| 22 | 8563370 |
| 23 | 17126742 |
| 24 | 34253482 |
| 25 | 68506966 |
| 26 | 137013930 |
| 27 | 274027862 |
| 28 | 548055722 |
| 29 | 1096111446 |
| 30 | 2192222890 |
| 31 | 4384445782 |
| 32 | 8768891562 |