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 | 1 |
| 2 | 3 |
| 3 | 9 |
| 4 | 21 |
| 5 | 46 |
| 6 | 94 |
| 7 | 185 |
| 8 | 353 |
| 9 | 659 |
| 10 | 1209 |
| 11 | 2188 |
| 12 | 3916 |
| 13 | 6945 |
| 14 | 12223 |
| 15 | 21373 |
| 16 | 37165 |
| 17 | 64314 |
| 18 | 110826 |
| 19 | 190265 |
| 20 | 325565 |
| 21 | 555431 |
| 22 | 945073 |
| 23 | 1604184 |
| 24 | 2717016 |
| 25 | 4592641 |
| 26 | 7748859 |
| 27 | 13052145 |
| 28 | 21950853 |
| 29 | 36863494 |
| 30 | 61824694 |
| 31 | 103559033 |
| 32 | 173264921 |
| 33 | 289575995 |
| 34 | 483474153 |