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 | 1 |
| 3 | 1 |
| 4 | 3 |
| 5 | 6 |
| 6 | 14 |
| 7 | 32 |
| 8 | 79 |
| 9 | 192 |
| 10 | 488 |
| 11 | 1244 |
| 12 | 3240 |
| 13 | 8497 |
| 14 | 22561 |
| 15 | 60309 |
| 16 | 162541 |
| 17 | 440598 |
| 18 | 1201377 |
| 19 | 3291426 |
| 20 | 9058464 |
| 21 | 25027797 |
| 22 | 69401101 |
| 23 | 193071153 |
| 24 | 538724060 |
| 25 | 1507288378 |
| 26 | 4227824974 |
| 27 | 11886150870 |
| 28 | 33488522111 |
| 29 | 94539554742 |
| 30 | 267383598840 |
| 31 | 757539956852 |
| 32 | 2149698586706 |
| 33 | 6109515731611 |