[seqfan] Sequence A139400

Richard Guy rkg at cpsc.ucalgary.ca
Tue Feb 3 01:30:15 CET 2009

In the formula for A139400 it seems
that the coefficient of a(n-22)
should be equal to that of a(n-10)
and not equal to those of a(n-21)
and a(n-11).  Also the signs seem
to be wrong.  Also it's misleading
to call 780 the seventh term of
A001353.  It is the sixth (involving
P_6); the zeroth is 0 and the first
is 1.

Does anyone know the correct recurrence,
&/or any more terms?      R.

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