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 | 0 |
| 1 | 1 |
| 2 | 97 |
| 3 | 962 |
| 4 | 4578 |
| 5 | 14979 |
| 6 | 38995 |
| 7 | 86996 |
| 8 | 173636 |
| 9 | 318597 |
| 10 | 547333 |
| 11 | 891814 |
| 12 | 1391270 |
| 13 | 2092935 |
| 14 | 3052791 |
| 15 | 4336312 |
| 16 | 6019208 |
| 17 | 8188169 |
| 18 | 10941609 |
| 19 | 14390410 |
| 20 | 18658666 |
| 21 | 23884427 |
| 22 | 30220443 |
| 23 | 37834908 |
| 24 | 46912204 |
| 25 | 57653645 |
| 26 | 70278221 |
| 27 | 85023342 |
| 28 | 102145582 |
| 29 | 121921423 |