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) |
|---|---|
| 6 | 1 |
| 7 | 12 |
| 8 | 44 |
| 9 | 142 |
| 10 | 399 |
| 11 | 1044 |
| 12 | 2571 |
| 13 | 6168 |
| 14 | 14357 |
| 15 | 32786 |
| 16 | 73746 |
| 17 | 163872 |
| 18 | 360462 |
| 19 | 786468 |
| 20 | 1703949 |
| 21 | 3670040 |
| 22 | 7864353 |
| 23 | 16777260 |
| 24 | 35651579 |
| 25 | 75497508 |
| 26 | 159383591 |
| 27 | 335544350 |
| 28 | 704643087 |
| 29 | 1476395064 |
| 30 | 3087007733 |
| 31 | 6442451004 |
| 32 | 13421772816 |
| 33 | 27917287460 |
| 34 | 57982058547 |
| 35 | 120259084318 |