%I A047886
%S A047886 0,0,1,0,1,0,0,0,0,1,0,1,0,0,0,0,0,0,1,1,2,0,1,0,1,1,1,1,0,0,
%T A047886 1,2,1,2,1,2,0,0,1,1,1,1,1,2,2,0,0,0,1,0,1,1,2,1,1,
%U A047886 0,1,0,0,0,1,1,1,1,0,0,0,0,0,1,1,2,1,2,1,1,1,2,0,1,0,1
%V A047886 0,0,1,0,1,0,0,0,0,-1,0,1,0,0,0,0,0,0,-1,-1,-2,0,1,0,-1,-1,-1,-1,0,0,
%W A047886 -1,-2,-1,-2,-1,-2,0,0,-1,-1,-1,-1,-1,-2,-2,0,0,0,-1,0,-1,-1,-2,-1,-1,
%X A047886 0,1,0,0,0,-1,-1,-1,-1,0,0,0,0,0,-1,-1,-2,-1,-2,-1,-1,-1,-2,0,1,0,-1
%N A047886 Triangle read by rows: T(n,k) = pi(n+k)-pi(n)-pi(k), where pi() = A000720 
               (n >= 0, 0<=k<=n).
%C A047886 T(n,0)=0; for n>0: T(n,1)=A010051(n); T(n,n)=-A060208(n). - Reinhard 
               Zumkeller (reinhard.zumkeller(AT)gmail.com), Apr 15 2008
%e A047886 0; 0,1; 0,1,0; 0,0,0,-1; 0,1,0,0,0; 0,0,0,-1,-1,-2; ...
%Y A047886 Cf. A047885.
%Y A047886 Sequence in context: A167746 A050370 A050374 this_sequence A014944 A015879 
               A016242
%Y A047886 Adjacent sequences: A047883 A047884 A047885 this_sequence A047887 A047888 
               A047889
%K A047886 sign,easy,tabl,nice
%O A047886 0,21
%A A047886 N. J. A. Sloane (njas(AT)research.att.com).
%E A047886 More terms from James A. Sellers (sellersj(AT)math.psu.edu), Dec 22 1999