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 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 11 |
| 5 | 22 |
| 6 | 40 |
| 7 | 79 |
| 8 | 145 |
| 9 | 152 |
| 10 | 244 |
| 11 | 271 |
| 12 | 1471 |
| 13 | 2516 |
| 14 | 3460 |
| 15 | 4130 |
| 16 | 4550 |
| 17 | 7534 |
| 18 | 12973 |
| 19 | 14051 |
| 20 | 14176 |
| 21 | 16093 |
| 22 | 16952 |
| 23 | 28565 |
| 24 | 121319 |