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 | 2 |
| 2 | 4 |
| 3 | 7 |
| 4 | 14 |
| 5 | 27 |
| 6 | 50 |
| 7 | 97 |
| 8 | 194 |
| 9 | 387 |
| 10 | 770 |
| 11 | 1539 |
| 12 | 3070 |
| 13 | 6137 |
| 14 | 12270 |
| 15 | 24539 |
| 16 | 49072 |
| 17 | 98141 |
| 18 | 196270 |
| 19 | 392517 |
| 20 | 785020 |
| 21 | 1570037 |
| 22 | 3140044 |
| 23 | 6280085 |
| 24 | 12560152 |
| 25 | 25120299 |
| 26 | 50240588 |
| 27 | 100481175 |
| 28 | 200962342 |
| 29 | 401924669 |
| 30 | 803849308 |
| 31 | 1607698611 |
| 32 | 3215397194 |