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 | 1 |
| 2 | 3 |
| 3 | 6 |
| 4 | 13 |
| 5 | 23 |
| 6 | 45 |
| 7 | 76 |
| 8 | 136 |
| 9 | 225 |
| 10 | 381 |
| 11 | 611 |
| 12 | 1001 |
| 13 | 1570 |
| 14 | 2489 |
| 15 | 3842 |
| 16 | 5948 |
| 17 | 9022 |
| 18 | 13714 |
| 19 | 20501 |
| 20 | 30649 |
| 21 | 45262 |
| 22 | 66721 |
| 23 | 97393 |
| 24 | 141888 |
| 25 | 204993 |