%I A083013
%S A083013 0,1,8,28,64,980,3104,81172,339328,11878244,61958240,2674671076,16735235392,
%T A083013 855605816468,6245150369696,368601472639540,3074742020313856,205700802920736452,
%U A083013 1930357641628367072,144338957346266943364,1505019970814899568320
%V A083013 0,1,-8,28,64,-980,-3104,81172,339328,-11878244,-61958240,2674671076,16735235392,
%W A083013 -855605816468,-6245150369696,368601472639540,3074742020313856,-205700802920736452,
%X A083013 -1930357641628367072,144338957346266943364,1505019970814899568320
%N A083013 a(n)=sum(k=0,n-1,9^k*B(k)*C(n,k)) where B(k) is the k-th Bernoulli number 
               and C(n,k)=binomial(n,k).
%o A083013 (PARI) a(n)=sum(k=0,n-1,9^k*binomial(n,k)*bernfrac(k))
%Y A083013 Cf. A001469.
%Y A083013 Sequence in context: A101127 A007259 A134747 this_sequence A028553 A100182 
               A119515
%Y A083013 Adjacent sequences: A083010 A083011 A083012 this_sequence A083014 A083015 
               A083016
%K A083013 sign
%O A083013 1,3
%A A083013 Benoit Cloitre (benoit7848c(AT)orange.fr), May 31 2003