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A287154
Number of simple disconnected integral graphs on n vertices.
2
0, 1, 2, 4, 7, 14, 26, 49, 97, 186, 379
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
LINKS
Table of n, a(n) for n=1..11.
Eric Weisstein's World of Mathematics, Disconnected Graph
Eric Weisstein's World of Mathematics, Integral Graph
FORMULA
a(n) = A077027(n) - A064731(n).
CROSSREFS
Cf. A077027 (number of simple not necessarily connected integral graphs).
Cf. A064731 (number of simple connected integral graphs).
Sequence in context: A253511 A076739 A017996 * A024502 A280254 A280917
Adjacent sequences: A287151 A287152 A287153 * A287155 A287156 A287157
KEYWORD
nonn,more
AUTHOR
Eric W. Weisstein, May 20 2017
STATUS
approved

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Last modified October 25 04:53 EDT 2024. Contains 377061 sequences.
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