login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A243326 Number of simple connected graphs with n nodes that are triangle-free and not integral. 0
0, 0, 1, 2, 5, 16, 58, 264, 1380, 9818 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..10.

Travis Hoppe and Anna Petrone, Encyclopedia of Finite Graphs

T. Hoppe and A. Petrone, Integer sequence discovery from small graphs, arXiv preprint arXiv:1408.3644 [math.CO], 2014.

CROSSREFS

Cf. A241842 (non-integral graphs), A024607 (triangle-free graphs).

Sequence in context: A262441 A300042 A019448 * A185143 A280760 A000753

Adjacent sequences:  A243323 A243324 A243325 * A243327 A243328 A243329

KEYWORD

nonn,more

AUTHOR

Travis Hoppe and Anna Petrone, Jun 03 2014

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 22 06:02 EDT 2018. Contains 316432 sequences. (Running on oeis4.)