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 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 1 |
| 5 | 2 |
| 6 | 5 |
| 7 | 12 |
| 8 | 27 |
| 9 | 59 |
| 10 | 127 |
| 11 | 269 |
| 12 | 563 |
| 13 | 1167 |
| 14 | 2400 |
| 15 | 4903 |
| 16 | 9960 |
| 17 | 20135 |
| 18 | 40534 |
| 19 | 81300 |
| 20 | 162538 |
| 21 | 324020 |
| 22 | 644282 |
| 23 | 1278152 |
| 24 | 2530407 |
| 25 | 5000178 |
| 26 | 9863763 |
| 27 | 19427976 |
| 28 | 38211861 |
| 29 | 75059535 |
| 30 | 147263905 |
| 31 | 288609341 |
| 32 | 565047233 |
| 33 | 1105229439 |
| 34 | 2159947998 |
| 35 | 4217784107 |
| 36 | 8230006378 |