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A013924 Number of labeled connected graphs with n nodes and 2 cutpoints. 2
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
Andrew Howroyd, Table of n, a(n) for n = 4..50
S. Selkow, The enumeration of labeled graphs by number of cutpoints, Discr. Math. 185 (1998), 183-191.
CROSSREFS
Column k=2 of A370064.
Sequence in context: A001814 A370750 A327079 * A145560 A332960 A230345
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 14 12:19 EDT 2024. Contains 372533 sequences. (Running on oeis4.)