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A287481 Number of (not-necessarily connected) non-chordal simple graphs on n vertices. 2
0, 0, 0, 1, 7, 62, 651, 10227, 260144, 11878410, 1017605477, 165072063493, 50501705362177, 29054148751458689 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

LINKS

Table of n, a(n) for n=1..14.

Eric Weisstein's World of Mathematics, Chordal Graph

FORMULA

a(n) = A241843(n) + A287482(n).

a(n) = A000088(n) - A048193(n).

CROSSREFS

Cf. A241843 (simple connected non-chordal graphs).

Cf. A287482 (simple disconnected non-chordal graphs).

Sequence in context: A180776 A024089 A327588 * A289212 A060005 A055066

Adjacent sequences:  A287478 A287479 A287480 * A287482 A287483 A287484

KEYWORD

nonn,more

AUTHOR

Eric W. Weisstein, May 25 2017

EXTENSIONS

a(11)-a(14) using formula by Falk Hüffner, Aug 10 2017

STATUS

approved

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Last modified August 8 05:50 EDT 2020. Contains 336290 sequences. (Running on oeis4.)