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 | 1 |
| 3 | 0 |
| 4 | 3 |
| 5 | 1 |
| 6 | 0 |
| 7 | 13 |
| 8 | 9 |
| 9 | 1 |
| 10 | 0 |
| 11 | 75 |
| 12 | 79 |
| 13 | 18 |
| 14 | 1 |
| 15 | 0 |
| 16 | 541 |
| 17 | 765 |
| 18 | 265 |
| 19 | 30 |
| 20 | 1 |
| 21 | 0 |
| 22 | 4683 |
| 23 | 8311 |
| 24 | 3870 |
| 25 | 665 |
| 26 | 45 |
| 27 | 1 |
| 28 | 0 |
| 29 | 47293 |
| 30 | 100989 |
| 31 | 59101 |
| 32 | 13650 |
| 33 | 1400 |
| 34 | 63 |
| 35 | 1 |
| 36 | 0 |
| 37 | 545835 |
| 38 | 1362439 |
| 39 | 960498 |
| 40 | 278901 |
| 41 | 38430 |
| 42 | 2618 |
| 43 | 84 |
| 44 | 1 |
| 45 | 0 |
| 46 | 7087261 |
| 47 | 20246445 |
| 48 | 16700545 |
| 49 | 5844510 |
| 50 | 1012431 |
| 51 | 92610 |
| 52 | 4494 |
| 53 | 108 |
| 54 | 1 |