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 | 2 |
| 3 | 3 |
| 4 | 6 |
| 5 | 9 |
| 6 | 11 |
| 7 | 18 |
| 8 | 38 |
| 9 | 43 |
| 10 | 87 |
| 11 | 126 |
| 12 | 670 |
| 13 | 1098 |
| 14 | 2421 |
| 15 | 3588 |
| 16 | 4201 |
| 17 | 5114 |
| 18 | 5877 |
| 19 | 5922 |
| 20 | 6048 |
| 21 | 11799 |
| 22 | 46119 |
| 23 | 46419 |
| 24 | 55098 |
| 25 | 55945 |
| 26 | 77439 |
| 27 | 91541 |
| 28 | 129624 |
| 29 | 153229 |
| 30 | 182402 |