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A287427
Number of disconnected chordal simple graphs on n vertices.
2
0, 1, 2, 5, 12, 36, 121, 505, 2613, 17219, 144696, 1542668, 20695228, 347085846
OFFSET
1,3
LINKS
Eric Weisstein's World of Mathematics, Chordal Graph
Eric Weisstein's World of Mathematics, Disconnected Graph
FORMULA
a(n) = A048193(n) - A048192(n).
CROSSREFS
Cf. A048193 (not-necessarily connected chordal graphs).
Cf. A048192 (connected chordal graphs).
Sequence in context: A094717 A323933 A038142 * A267397 A267398 A267399
KEYWORD
nonn,more
AUTHOR
Eric W. Weisstein, May 24 2017
STATUS
approved