A055355 Number of labeled mobiles (circular rooted trees) with n nodes and 8 leaves.

45360, 9862560, 1160973000, 99904860000, 7103580541200, 445556635524000, 25652184715357200, 1391455702596960000, 72404516222438400000, 3661224054771419136000, 181631020686490222848000

Offset: 9

Author

Christian G. Bower, May 15 2000

Keywords

• nonn

Links

• Georg Fischer, Table of n, a(n) for n = 9..250
• Index entries for sequences related to mobiles

Crossrefs

Column 8 of A055349.

Programs

Mathematica

m = 20; L[x_] = Log[1 - x] + O[x]^m // Normal; A[_] = 0;
Do[A[x_] = x y - x  L[A[x]] + O[x]^k // Normal // Expand, {k, m}];
Drop[(SeriesCoefficient[#, {y, 0, 8}] & /@ CoefficientList[A[x], x]) * Range[0, m - 1]!, 9] (* Jean-François Alcover, Nov 01 2019 *)