OFFSET
0,11
LINKS
MATHEMATICA
(* EulerTransform is defined in A005195 *)
EulerTransform[Rest @ A033886] (* Jean-François Alcover, Dec 04 2019, updated Mar 18 2020 *)
CROSSREFS
4-regular simple graphs with girth at least 4: A033886 (connected), A185244 (disconnected), this sequence (not necessarily connected).
KEYWORD
nonn,hard,more
AUTHOR
Jason Kimberley, Nov 03 2011
STATUS
approved