0,5

Table of n, a(n) for n=0..62.

Jason Kimberley, Index of sequences counting disconnected k-regular simple graphs with girth at least g

Disconnected regular graphs with girth at least g: A068932 (g=3), A185214 (g=4), A185215 (g=5), A185216 (g=6), this sequence (g=7).

Disconnected k-regular simple graphs with girth at least 7: this sequence (all k), A185207 (triangle); A185227 (k=2), A185237 (k=3).

Sequence in context: A161059 A161263 A161288 * A131456 A074944 A245041

Adjacent sequences: A185214 A185215 A185216 * A185218 A185219 A185220

nonn,hard

Jason Kimberley, Oct 27 2012

approved