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 | 2 |
| 4 | 5 |
| 5 | 13 |
| 6 | 28 |
| 7 | 58 |
| 8 | 114 |
| 9 | 218 |
| 10 | 407 |
| 11 | 747 |
| 12 | 1352 |
| 13 | 2420 |
| 14 | 4292 |
| 15 | 7554 |
| 16 | 13209 |
| 17 | 22969 |
| 18 | 39748 |
| 19 | 68494 |
| 20 | 117590 |
| 21 | 201210 |
| 22 | 343275 |
| 23 | 584087 |
| 24 | 991440 |
| 25 | 1679208 |
| 26 | 2838408 |
| 27 | 4789058 |
| 28 | 8066669 |
| 29 | 13566373 |
| 30 | 22782892 |
| 31 | 38209762 |
| 32 | 64003002 |
| 33 | 107083610 |
| 34 | 178967807 |
| 35 | 298803459 |
| 36 | 498404504 |