cp's OEIS Frontend

A215839 Ninth 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 A215839 #8 Oct 31 2014 21:34:48
%S A215839 0,-5112,253296,360144,6333336,3863808,6019416,3010680,56343456,
%T A215839 27617616,14843808,26108208,13309272,39097296,18337680,14572944,
%U A215839 7829424,293095080,139667616,70196904,101378376,55969128,55359216,31002552,111791088,56304360,40935024
%N A215839 Ninth 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 A215839 For the ordering of functions f_n see A215703.
%H A215839 Alois P. Heinz, <a href="/A215839/b215839.txt">Table of n, a(n) for n = 1..7813</a>
%p A215839 # load programs from A215703, then:
%p A215839 seq(A(9, n), n=1..100);
%Y A215839 Row n=9 of A215703.
%Y A215839 Cf. A000081, A087803.
%K A215839 sign
%O A215839 1,2
%A A215839 _Alois P. Heinz_, Aug 24 2012