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 | 0 |
| 1 | 1 |
| 2 | 3 |
| 3 | 6 |
| 4 | 16 |
| 5 | 36 |
| 6 | 73 |
| 7 | 156 |
| 8 | 324 |
| 9 | 677 |
| 10 | 1405 |
| 11 | 2864 |
| 12 | 5906 |
| 13 | 12058 |
| 14 | 24548 |
| 15 | 49928 |
| 16 | 101434 |
| 17 | 206173 |
| 18 | 417141 |
| 19 | 844256 |
| 20 | 1707622 |
| 21 | 3452998 |
| 22 | 6970196 |
| 23 | 14058528 |
| 24 | 28368774 |
| 25 | 57197983 |
| 26 | 115239846 |
| 27 | 232020596 |
| 28 | 467296470 |
| 29 | 940684267 |
| 30 | 1892396396 |
| 31 | 3805806218 |
| 32 | 7654402454 |
| 33 | 15391563411 |