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 | 1 |
| 6 | 0 |
| 7 | 2 |
| 8 | 1 |
| 9 | 3 |
| 10 | 3 |
| 11 | 6 |
| 12 | 5 |
| 13 | 13 |
| 14 | 12 |
| 15 | 28 |
| 16 | 25 |
| 17 | 58 |
| 18 | 53 |
| 19 | 118 |
| 20 | 115 |
| 21 | 243 |
| 22 | 236 |
| 23 | 505 |
| 24 | 480 |
| 25 | 1027 |
| 26 | 1002 |
| 27 | 2068 |
| 28 | 2043 |
| 29 | 4217 |
| 30 | 4127 |
| 31 | 8509 |
| 32 | 8414 |
| 33 | 17092 |
| 34 | 16996 |
| 35 | 34528 |
| 36 | 34157 |
| 37 | 69377 |
| 38 | 69010 |
| 39 | 139087 |
| 40 | 138726 |
| 41 | 279576 |
| 42 | 278123 |
| 43 | 560558 |
| 44 | 559085 |
| 45 | 1122538 |
| 46 | 1121029 |
| 47 | 2250783 |
| 48 | 2244899 |
| 49 | 4507272 |