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 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 7 |
| 4 | 13 |
| 5 | 25 |
| 6 | 49 |
| 7 | 93 |
| 8 | 179 |
| 9 | 343 |
| 10 | 656 |
| 11 | 1255 |
| 12 | 2401 |
| 13 | 4592 |
| 14 | 8785 |
| 15 | 16807 |
| 16 | 32150 |
| 17 | 61501 |
| 18 | 117649 |
| 19 | 225054 |
| 20 | 430513 |
| 21 | 823543 |
| 22 | 1575381 |
| 23 | 3013595 |
| 24 | 5764801 |
| 25 | 11027667 |
| 26 | 21095169 |
| 27 | 40353607 |
| 28 | 77193673 |
| 29 | 147666184 |
| 30 | 282475249 |
| 31 | 540355712 |
| 32 | 1033663291 |
| 33 | 1977326743 |
| 34 | 3782489985 |