Table of n, a(n) for n=0..47.
Jason Kimberley, Index of sequences counting disconnected k-regular simple graphs with girth at least g
Disconnected 4-regular simple graphs with girth at least g: A033483 (g=3), A185244 (g=4), this sequence (g=5), A185246 (g=6).
Sequence in context: A204243 A203203 A046912 * A006122 A111014 A171184
Adjacent sequences: A185242 A185243 A185244 * A185246 A185247 A185248
Jason Kimberley, Feb 22 2011