A263914 Number of (not necessarily connected) simple bridgeless graphs with n nodes.

1, 1, 2, 5, 16, 77, 582, 8002, 205538, 10010657, 912838330, 154634281045, 48597689465264, 28412286324844316, 31024936551325074359, 63533058735488301141874, 244916078109873267213212830, 1783406527132994841804241539063, 24605674622456537969150523621546114

Offset

1,3

Links

Andrew Howroyd, Table of n, a(n) for n = 1..30

Eric Weisstein's World of Mathematics, Bridgeless Graph

Eric Weisstein's World of Mathematics, Simple Graph

Formula

a(n) = A000088(n) - A263915(n).

Euler transform of A007146. - Falk Hüffner, Jan 18 2016

Crossrefs

Cf. A000088 (number of simple graphs).

Cf. A007146 (number of simple connected bridgeless graphs).

Cf. A052446 (number of simple connected bridged graphs).

Cf. A263915 (number of simple bridged graphs).

Sequence in context: A179500 A121396 A371829 * A218168 A054960 A004110

Adjacent sequences: A263911 A263912 A263913 * A263915 A263916 A263917

Keyword

nonn

Author

Eric W. Weisstein, Oct 29 2015

Extensions

More terms from A007146 by Falk Hüffner, Jan 18 2016

Status

approved