%I A083579
%S A083579 0,1,1,4,8,19,39,82,166,337,677,1360,2724,5455,10915,21838,43682,87373,
%T A083579 174753,349516,699040,1398091,2796191,5592394,11184798,22369609,
%U A083579 44739229,89478472,178956956,357913927,715827867,1431655750,2863311514
%N A083579 Generalized Jacobsthal numbers.
%F A083579 a(n)=2*2^n/3-5(-1)^n/12-(2*n+1)/4 a(n+2)=a(n+1)+2a(n)+n, a(0)=0, a(1)=1
%Y A083579 Cf. A083580.
%Y A083579 Sequence in context: A049933 A163318 A129362 this_sequence A104626 A065034 
               A006580
%Y A083579 Adjacent sequences: A083576 A083577 A083578 this_sequence A083580 A083581 
               A083582
%K A083579 easy,nonn
%O A083579 0,4
%A A083579 Paul Barry (pbarry(AT)wit.ie), May 01 2003