%I #5 Mar 30 2012 17:25:35
%S 1,6,18,48,131,363,1017,2873,8169,23349,67024,193086,557949,1616501,
%T 4694034,13657896,39809649,116218701,339762942,994553160,2914608177,
%U 8550424953,25107964077,73793368593,217057617567,638936722403,1882096946232,5547613247418
%N Inverse binomial transform of A048775 (assuming offset zero in both sequences)
%F A007318^(-1) * A048775, where A048775 = (1, 7, 31, 121, 456, 1709,...).
%e a(4) = 48 = (-1, 3, -3, 1) dot (1, 7, 31, 121).
%Y A048775
%K nonn
%O 1,2
%A _Gary W. Adamson_, Aug 03 2009