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 | 2 |
| 3 | 0 |
| 4 | 4 |
| 5 | 2 |
| 6 | 6 |
| 7 | 4 |
| 8 | 10 |
| 9 | 8 |
| 10 | 18 |
| 11 | 14 |
| 12 | 28 |
| 13 | 24 |
| 14 | 44 |
| 15 | 42 |
| 16 | 68 |
| 17 | 66 |
| 18 | 102 |
| 19 | 104 |
| 20 | 154 |
| 21 | 160 |
| 22 | 226 |
| 23 | 238 |
| 24 | 330 |
| 25 | 354 |
| 26 | 476 |
| 27 | 516 |
| 28 | 676 |
| 29 | 742 |
| 30 | 958 |
| 31 | 1056 |
| 32 | 1342 |
| 33 | 1486 |
| 34 | 1862 |
| 35 | 2076 |
| 36 | 2568 |
| 37 | 2872 |
| 38 | 3516 |
| 39 | 3940 |
| 40 | 4782 |
| 41 | 5370 |
| 42 | 6464 |
| 43 | 7268 |
| 44 | 8686 |
| 45 | 9774 |
| 46 | 11606 |
| 47 | 13070 |
| 48 | 15428 |
| 49 | 17380 |
| 50 | 20408 |
| 51 | 22986 |