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A128236 Number of n-node (unlabeled) graphs with girth 3. 10
1, 4, 20, 118, 937, 11936, 272771, 11992996, 1018892793, 165089910412, 50502010570950, 29054155189364119, 31426485955571756316, 64001015703946097640927, 245935864153501211843554826 (list; graph; refs; listen; history; text; internal format)
OFFSET
3,2
LINKS
Table of n, a(n) for n=3..17.
CROSSREFS
a(n) = A000088(n) - A006785(n).
Cf. A128041, A128042, A128237-A128243.
Sequence in context: A370530 A127088 A258666 * A091046 A101055 A208232
Adjacent sequences: A128233 A128234 A128235 * A128237 A128238 A128239
KEYWORD
nonn
AUTHOR
Keith Briggs, May 05 2007
EXTENSIONS
Corrected and extended by Martin Fuller, May 01 2015
STATUS
approved

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Last modified May 16 11:36 EDT 2024. Contains 372552 sequences. (Running on oeis4.)