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A088929 Coefficient of x^n in A(x)^n is A087457(n) for n>=1. 1
1, 1, 2, 6, 23, 102, 497, 2586, 14121, 80006, 466658, 2786516, 16963465, 104952998, 658331520, 4178564242, 26795934011, 173388619910, 1130909675998, 7428671873154, 49107718199253, 326490488777384, 2181920676380877 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

A087457 gives number of odd length roads between any adjacent nodes in virtual optimal chordal ring of degree 3.

LINKS

Table of n, a(n) for n=0..22.

CROSSREFS

Cf. A087457, A088930.

Sequence in context: A050389 A098746 A245389 * A279573 A174193 A238639

Adjacent sequences:  A088926 A088927 A088928 * A088930 A088931 A088932

KEYWORD

nonn

AUTHOR

Paul D. Hanna, Oct 24 2003

STATUS

approved

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Last modified April 1 02:15 EDT 2020. Contains 333153 sequences. (Running on oeis4.)