Search: id:A049886 Results 1-1 of 1 results found. %I A049886 %S A049886 1,1,1,2,4,8,16,32,63,127,254,508,1015,2028,4052,8096,16176,32383, %T A049886 64766,129532,259063,518124,1036244,2072480,4144944,8289857,16579650, %U A049886 33159173,66318092,132635677,265270341,530538658,1061073272,2122154639 %N A049886 a(n)=a(1)+a(2)+...+a(n-1)-a(m), where m=n-1-2^p and 2^p