Sequence defined by a(0)=a(1)=a(2)=1, a(3)=2, a(4)=6 and the formula a(n)=2^(n-2)+2 for n>=5.

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =6a(5) =10a(6) =18a(7) =34a(8) =66a(9) =130a(10) =258a(11) =514a(12) =1026a(13) =2050a(14) =4098a(15) =8194a(16) =16386a(17) =32770a(18) =65538a(19) =131074a(20) =262146a(21) =524290a(22) =1048578a(23) =2097154a(24) =4194306a(25) =8388610a(26) =16777218a(27) =33554434a(28) =67108866a(29) =134217730