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 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 7 |
| 5 | 11 |
| 6 | 25 |
| 7 | 41 |
| 8 | 82 |
| 9 | 142 |
| 10 | 260 |
| 11 | 436 |
| 12 | 785 |
| 13 | 1287 |
| 14 | 2199 |
| 15 | 3592 |
| 16 | 5959 |
| 17 | 9511 |
| 18 | 15453 |
| 19 | 24268 |
| 20 | 38565 |
| 21 | 59838 |
| 22 | 93232 |
| 23 | 142589 |
| 24 | 219089 |
| 25 | 330848 |
| 26 | 500658 |
| 27 | 748140 |
| 28 | 1117856 |
| 29 | 1651987 |
| 30 | 2441484 |
| 31 | 3572470 |
| 32 | 5223653 |
| 33 | 7576447 |
| 34 | 10971112 |
| 35 | 15775735 |
| 36 | 22649645 |
| 37 | 32307553 |
| 38 | 46001087 |
| 39 | 65138447 |
| 40 | 92045412 |