A160884 Regular coverings having dihedral voltage groups: see Kwak-Lee reference in A160870 for precise definition.
3, 15, 121, 1271, 15233
Offset: 1
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.