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) |
|---|---|
| 0 | 14 |
| 1 | 27 |
| 2 | 53 |
| 3 | 105 |
| 4 | 209 |
| 5 | 417 |
| 6 | 833 |
| 7 | 1665 |
| 8 | 3329 |
| 9 | 6657 |
| 10 | 13313 |
| 11 | 26625 |
| 12 | 53249 |
| 13 | 106497 |
| 14 | 212993 |
| 15 | 425985 |
| 16 | 851969 |
| 17 | 1703937 |
| 18 | 3407873 |
| 19 | 6815745 |
| 20 | 13631489 |
| 21 | 27262977 |
| 22 | 54525953 |
| 23 | 109051905 |
| 24 | 218103809 |
| 25 | 436207617 |
| 26 | 872415233 |
| 27 | 1744830465 |
| 28 | 3489660929 |