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A055353
Number of labeled mobiles (circular rooted trees) with n nodes and 6 leaves.
2
840, 98784, 6618528, 339111360, 14931378000, 600119150400, 22811289621120, 838683494288640, 30275663821603200, 1084273458428160000, 38808699592126464000, 1395650171787308236800, 50626461643690886553600
OFFSET
7,1
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, 6}] & /@ CoefficientList[A[x], x]) * Range[0, m - 1]!, 7] (* Jean-François Alcover, Nov 01 2019 *)
CROSSREFS
Column 6 of A055349.
Sequence in context: A226268 A218410 A022052 * A107516 A091035 A181203
KEYWORD
nonn
AUTHOR
Christian G. Bower, May 15 2000
STATUS
approved