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) |
|---|---|
| 45 | 1 |
| 46 | 1 |
| 47 | 3 |
| 48 | 7 |
| 49 | 16 |
| 50 | 35 |
| 51 | 76 |
| 52 | 162 |
| 53 | 342 |
| 54 | 715 |
| 55 | 1474 |
| 56 | 3049 |
| 57 | 6245 |
| 58 | 12746 |
| 59 | 25922 |
| 60 | 52571 |
| 61 | 106353 |
| 62 | 214731 |
| 63 | 432827 |
| 64 | 871240 |
| 65 | 1751725 |
| 66 | 3518787 |
| 67 | 7062725 |
| 68 | 14167004 |
| 69 | 28402284 |
| 70 | 56916681 |
| 71 | 114017164 |
| 72 | 228335406 |
| 73 | 457163368 |
| 74 | 915131854 |
| 75 | 1831578490 |
| 76 | 3665302380 |
| 77 | 7334102844 |
| 78 | 14673905376 |