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A013924 Number of labeled connected graphs with n nodes and 2 cutpoints. 0
12, 180, 4560, 211680, 17186624, 2416430016, 597615868800, 266262716016000, 218583901063537152, 336744209796848156160, 987653716558634390487040, 5576385411303897176201779200, 61117320790343064985205192540160 (list; graph; refs; listen; history; text; internal format)
OFFSET

4,1

LINKS

Table of n, a(n) for n=4..16.

S. Selkow, The enumeration of labeled graphs by number of cutpoints, Discr. Math. 185 (1998), 183-191.

CROSSREFS

Sequence in context: A051609 A001814 A327079 * A145560 A230345 A166773

Adjacent sequences:  A013921 A013922 A013923 * A013925 A013926 A013927

KEYWORD

nonn

AUTHOR

Stanley Selkow (sms(AT)owl.WPI.EDU)

EXTENSIONS

More terms from Sean A. Irvine, Aug 29 2018

STATUS

approved

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Last modified May 25 17:53 EDT 2020. Contains 334595 sequences. (Running on oeis4.)