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 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 0 |
| 10 | 1 |
| 11 | 6 |
| 12 | 24 |
| 13 | 79 |
| 14 | 222 |
| 15 | 556 |
| 16 | 1271 |
| 17 | 2701 |
| 18 | 5402 |
| 19 | 10264 |
| 20 | 18662 |
| 21 | 32658 |
| 22 | 55268 |
| 23 | 90798 |
| 24 | 145278 |
| 25 | 226997 |
| 26 | 347172 |
| 27 | 520758 |
| 28 | 767433 |
| 29 | 1112778 |
| 30 | 1589683 |
| 31 | 2240008 |
| 32 | 3116533 |
| 33 | 4285233 |
| 34 | 5827917 |
| 35 | 7845273 |