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 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 1 |
| 8 | 0 |
| 9 | 1 |
| 10 | 9 |
| 11 | 1 |
| 12 | 7 |
| 13 | 68 |
| 14 | 9 |
| 15 | 61 |
| 16 | 473 |
| 17 | 81 |
| 18 | 440 |
| 19 | 3316 |
| 20 | 614 |
| 21 | 3315 |
| 22 | 23537 |
| 23 | 4613 |
| 24 | 24419 |
| 25 | 169404 |
| 26 | 34247 |
| 27 | 182074 |
| 28 | 1236200 |
| 29 | 255636 |
| 30 | 1363691 |
| 31 | 9131384 |