A088929 Coefficient of x^n in A(x)^n is A087457(n) for n>=1.

1, 1, 2, 6, 23, 102, 497, 2586, 14121, 80006, 466658, 2786516, 16963465, 104952998, 658331520, 4178564242, 26795934011, 173388619910, 1130909675998, 7428671873154, 49107718199253, 326490488777384, 2181920676380877

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 * A356111 A279573 A174193

Adjacent sequences: A088926 A088927 A088928 * A088930 A088931 A088932

Keyword

nonn

Author

Paul D. Hanna, Oct 24 2003

Status

approved