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) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 2 |
| 7 | 3 |
| 8 | 6 |
| 9 | 7 |
| 10 | 16 |
| 11 | 21 |
| 12 | 43 |
| 13 | 63 |
| 14 | 129 |
| 15 | 203 |
| 16 | 404 |
| 17 | 685 |
| 18 | 1343 |
| 19 | 2385 |
| 20 | 4625 |
| 21 | 8492 |
| 22 | 16409 |
| 23 | 30735 |
| 24 | 59290 |
| 25 | 112530 |
| 26 | 217182 |
| 27 | 415620 |
| 28 | 803076 |
| 29 | 1545463 |
| 30 | 2990968 |
| 31 | 5778267 |
| 32 | 11201472 |
| 33 | 21702686 |
| 34 | 42140890 |
| 35 | 81830744 |
| 36 | 159139498 |
| 37 | 309590883 |
| 38 | 602935713 |
| 39 | 1174779333 |
| 40 | 2290915478 |
| 41 | 4469734225 |
| 42 | 8726815264 |