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 | 1 |
| 2 | 3 |
| 3 | 8 |
| 4 | 19 |
| 5 | 43 |
| 6 | 94 |
| 7 | 202 |
| 8 | 428 |
| 9 | 899 |
| 10 | 1875 |
| 11 | 3890 |
| 12 | 8036 |
| 13 | 16544 |
| 14 | 33962 |
| 15 | 69552 |
| 16 | 142149 |
| 17 | 290017 |
| 18 | 590814 |
| 19 | 1202016 |
| 20 | 2442706 |
| 21 | 4958974 |
| 22 | 10058216 |
| 23 | 20384498 |
| 24 | 41282346 |
| 25 | 83549603 |
| 26 | 168992081 |
| 27 | 341627732 |
| 28 | 690279026 |
| 29 | 1394115072 |
| 30 | 2814430326 |
| 31 | 5679552630 |
| 32 | 11457287926 |
| 33 | 23104929222 |