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A215837 Seventh derivative of f_n at x=1, where f_n is the n-th of all functions that are representable as x^x^...^x with m>=1 x's and parentheses inserted in all possible ways.

%I A215837 #10 Oct 31 2014 21:37:57
%S A215837 0,-42,6804,6524,70098,41090,47110,26054,349440,187124,106876,154336,
%T A215837 89600,184296,100660,77084,47894,1192590,644546,358330,453250,287294,
%U A215837 269262,170506,434322,254506,187250,126560,520982,294546,169330,203350,137620,182294,114044
%N A215837 Seventh derivative of f_n at x=1, where f_n is the n-th of all functions that are representable as x^x^...^x with m>=1 x's and parentheses inserted in all possible ways.
%C A215837 For the ordering of functions f_n see A215703.
%H A215837 Alois P. Heinz, <a href="/A215837/b215837.txt">Table of n, a(n) for n = 1..7813</a>
%p A215837 # load programs from A215703, then:
%p A215837 seq(A(7, n), n=1..100);
%Y A215837 Row n=7 of A215703.
%Y A215837 Number of distinct values of a(n) taken for functions with m x's: A215796.
%Y A215837 Cf. A000081, A087803.
%K A215837 sign
%O A215837 1,2
%A A215837 _Alois P. Heinz_, Aug 24 2012