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) |
|---|---|
| 5 | 1 |
| 6 | 0 |
| 7 | 2 |
| 8 | 9 |
| 9 | 14 |
| 10 | 33 |
| 11 | 92 |
| 12 | 189 |
| 13 | 411 |
| 14 | 926 |
| 15 | 2016 |
| 16 | 4219 |
| 17 | 8935 |
| 18 | 18805 |
| 19 | 38808 |
| 20 | 79928 |
| 21 | 163963 |
| 22 | 332676 |
| 23 | 672036 |
| 24 | 1352412 |
| 25 | 2705019 |
| 26 | 5385960 |
| 27 | 10684650 |
| 28 | 21105565 |
| 29 | 41533076 |
| 30 | 81467400 |
| 31 | 159263257 |
| 32 | 310372453 |
| 33 | 603149241 |
| 34 | 1168863180 |
| 35 | 2259230907 |