0,3
It appears that a(n) is the number of (n+11)-digit fixed points under the base-7 Kaprekar map A165071 (see A165075 for the list of fixed points). [From Joseph Myers (jsm(AT)polyomino.org.uk), Sep 04 2009]
Index entries for Molien series
INRIA Algorithms Project, Encyclopedia of Combinatorial Structures 225
1/(1-x^2)^2/(1-x^9)
Sequence in context: A135472 A008723 A008803 this_sequence A008736 A029180 A008802
Adjacent sequences: A008719 A008720 A008721 this_sequence A008723 A008724 A008725
nonn
N. J. A. Sloane (njas(AT)research.att.com).
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