A088929 - OEIS

%I #3 Mar 30 2012 18:36:39

%S 1,1,2,6,23,102,497,2586,14121,80006,466658,2786516,16963465,

%T 104952998,658331520,4178564242,26795934011,173388619910,

%U 1130909675998,7428671873154,49107718199253,326490488777384,2181920676380877

%N Coefficient of x^n in A(x)^n is A087457(n) for n>=1.

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

%Y Cf. A087457, A088930.

%K nonn

%O 0,3

%A _Paul D. Hanna_, Oct 24 2003