a(n) = 2*a(n-1) + 2^(n-1), for n > 0, with a(0)=6.

Terms

a(0) =6a(1) =13a(2) =28a(3) =60a(4) =128a(5) =272a(6) =576a(7) =1216a(8) =2560a(9) =5376a(10) =11264a(11) =23552a(12) =49152a(13) =102400a(14) =212992a(15) =442368a(16) =917504a(17) =1900544a(18) =3932160a(19) =8126464a(20) =16777216a(21) =34603008a(22) =71303168a(23) =146800640a(24) =301989888a(25) =620756992a(26) =1275068416a(27) =2617245696a(28) =5368709120