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) |
|---|---|
| 7 | 1 |
| 8 | 2 |
| 9 | 6 |
| 10 | 17 |
| 11 | 50 |
| 12 | 143 |
| 13 | 415 |
| 14 | 1192 |
| 15 | 3444 |
| 16 | 9931 |
| 17 | 28687 |
| 18 | 82857 |
| 19 | 239563 |
| 20 | 692878 |
| 21 | 2005381 |
| 22 | 5806915 |
| 23 | 16824277 |
| 24 | 48767953 |
| 25 | 141430699 |
| 26 | 410341703 |
| 27 | 1191064873 |
| 28 | 3458607705 |
| 29 | 10046993035 |
| 30 | 29196507434 |
| 31 | 84874753458 |
| 32 | 246814998803 |
| 33 | 717965190047 |
| 34 | 2089140528083 |
| 35 | 6080768466919 |