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Number of singly defective permutations of 1..n+8 with exactly 5 maxima.
2

%I #7 May 12 2020 19:57:15

%S 249984,14548480,469942528,11190054912,219921448448,3786548183040,

%T 59211819110400,861044410941440,11836043861688320,155624676666900480,

%U 1974466952368095232,24334201908725022720,292836028257957445632,3454921061964353372160,40092721917664469975040

%N Number of singly defective permutations of 1..n+8 with exactly 5 maxima.

%C A singly defective permutation omits one value and repeats another value.

%H Andrew Howroyd, <a href="/A183268/b183268.txt">Table of n, a(n) for n = 1..200</a>

%e Some solutions for n=2 with 5 maxima:

%e (6,1,2,9,7,9,4,10,5,8) (6,1,5,3,10,9,4,8,2,4) (6,1,3,2,10,4,9,3,5,7).

%Y Column 5 of A183270.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 03 2011

%E Terms a(8) and beyond from _Andrew Howroyd_, May 12 2020