A366582 Numbers k such that 6^k + 1 is a semiprime.
3, 8, 11, 12, 31, 43, 47, 59, 62, 107, 382, 514, 734, 811
Offset: 1
Examples
11 is in this sequence because 6^11+1 = 7*51828151 is a semiprime.
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.
11 is in this sequence because 6^11+1 = 7*51828151 is a semiprime.