[seqfan] A106804

Harvey P. Dale hpd1 at nyu.edu
Tue Dec 13 23:32:42 CET 2011

	There seem to be several problems with the above sequence:

1.  The definition does not generate the terms of the sequence, but a
different generating function does.  The g.f. that works is:

                  (-2 x + 9 x^2 + 4 x^3)/(-1 + 10 x - 25 x^2 + x^4)

2.  The Mma program that is given does not generate the terms of the

3.  There is a fairly simple linear recurrence that does generate the
terms of the sequence:

               a(0)=0, a(1)=2, a(2)=11, a(3)=56,

4.  The Extension field says that the sequence was "Edited by the
Associate Editors of the OEIS, Apr 09 2009" which puzzles me given the
above problems.

	I am not sure of how best to proceed.



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