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 | 2 |
| 3 | 4 |
| 4 | 8 |
| 5 | 15 |
| 6 | 27 |
| 7 | 48 |
| 8 | 86 |
| 9 | 152 |
| 10 | 266 |
| 11 | 463 |
| 12 | 806 |
| 13 | 1400 |
| 14 | 2429 |
| 15 | 4212 |
| 16 | 7301 |
| 17 | 12651 |
| 18 | 21918 |
| 19 | 37969 |
| 20 | 65771 |
| 21 | 113926 |
| 22 | 197332 |
| 23 | 341797 |
| 24 | 592018 |
| 25 | 1025414 |
| 26 | 1776077 |