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 | 2 |
| 2 | 4 |
| 3 | 8 |
| 4 | 15 |
| 5 | 27 |
| 6 | 48 |
| 7 | 81 |
| 8 | 135 |
| 9 | 220 |
| 10 | 352 |
| 11 | 553 |
| 12 | 859 |
| 13 | 1313 |
| 14 | 1986 |
| 15 | 2969 |
| 16 | 4394 |
| 17 | 6439 |
| 18 | 9357 |
| 19 | 13479 |
| 20 | 19273 |
| 21 | 27353 |
| 22 | 38558 |
| 23 | 53998 |
| 24 | 75168 |
| 25 | 104022 |
| 26 | 143172 |
| 27 | 196021 |
| 28 | 267051 |
| 29 | 362086 |
| 30 | 488733 |
| 31 | 656802 |
| 32 | 879026 |
| 33 | 1171747 |
| 34 | 1555997 |
| 35 | 2058663 |
| 36 | 2714133 |
| 37 | 3566122 |
| 38 | 4670256 |
| 39 | 6096924 |
| 40 | 7935184 |