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A185234
Number of disconnected 3-regular simple graphs on 2n vertices with girth at least 4.
13
0, 0, 0, 0, 0, 0, 1, 2, 9, 35, 177, 1153, 10341, 120523, 1702432, 27507351, 492377298, 9600913017, 201990426697, 4555849947783
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OFFSET
0,8
LINKS
Table of n, a(n) for n=0..19.
Jason Kimberley,
Index of sequences counting disconnected k-regular simple graphs with girth at least g
CROSSREFS
Disconnected k-regular simple graphs with girth at least 4:
A185214
(any k),
A185204
(triangle); specified degree k:
A185224
(k=2), this sequence (k=3),
A185244
(k=4),
A185254
(k=5),
A185264
(k=6),
A185274
(k=7),
A185284
(k=8),
A185294
(k=9).
Sequence in context:
A150965
A150966
A185034
*
A357202
A306791
A175231
Adjacent sequences:
A185231
A185232
A185233
*
A185235
A185236
A185237
KEYWORD
nonn
,
hard
,
more
AUTHOR
Jason Kimberley
, Feb 22 2011
STATUS
approved
