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A241842 Number of simple connected graphs on n nodes that are non-integral. 14
0, 0, 1, 4, 18, 106, 846, 11095, 261056, 11716488, 1006700452 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,4
LINKS
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, 2014
Eric Weisstein's World of Mathematics, Integral Graph
FORMULA
a(n) = A001349(n) - A064731(n).
CROSSREFS
Sequence in context: A354015 A009597 A241841 * A306003 A214840 A060223
KEYWORD
nonn,less
AUTHOR
Travis Hoppe and Anna Petrone, Apr 29 2014
STATUS
approved

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Last modified June 20 19:46 EDT 2024. Contains 373532 sequences. (Running on oeis4.)