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A130132 Number of trees on n vertices which are not lobsters. 2
0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 4, 19, 77, 287, 1002, 3365, 10853, 34088, 104574, 315116, 935321, 2743374, 7966723, 22951010, 65681536, 186961873, 529845497, 1496245171, 4213181063, 11836671278, 33195092417, 92966480736 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,11

LINKS

Andrew Howroyd, Table of n, a(n) for n = 1..200

Eric Weisstein's World of Mathematics, Lobster Graph

FORMULA

a(n) = A000055(n) - A130131(n). - Andrew Howroyd, Nov 02 2017

CROSSREFS

Cf. A000055, A130131.

Sequence in context: A167478 A094734 A094578 * A037590 A037681 A156760

Adjacent sequences:  A130129 A130130 A130131 * A130133 A130134 A130135

KEYWORD

nonn

AUTHOR

Eric W. Weisstein, May 11 2007

EXTENSIONS

a(15)-a(32) from Washington Bomfim, Feb 23 2011

STATUS

approved

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Last modified March 19 23:02 EDT 2019. Contains 321343 sequences. (Running on oeis4.)