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 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 1 |
| 8 | 1 |
| 9 | 1 |
| 10 | 1 |
| 11 | 1 |
| 12 | 1 |
| 13 | 1 |
| 14 | 1 |
| 15 | 9 |
| 16 | 234 |
| 17 | 2350 |
| 18 | 12567 |
| 19 | 44971 |
| 20 | 127475 |
| 21 | 320491 |
| 22 | 756677 |
| 23 | 1720610 |
| 24 | 3821223 |
| 25 | 8436508 |
| 26 | 19793620 |
| 27 | 59810128 |
| 28 | 268048977 |
| 29 | 1458971589 |
| 30 | 7720465569 |
| 31 | 36927931597 |
| 32 | 159094351283 |
| 33 | 626621217546 |
| 34 | 2296016964863 |
| 35 | 7949275945740 |