Sequence is identical to its third differences: a(n+3) = 3*a(n+2) - 3*a(n+1) + 2*a(n), with a(0)=a(1)=1, a(2)=2.

A130781

Sequence is identical to its third differences: a(n+3) = 3*a(n+2) - 3*a(n+1) + 2*a(n), with a(0)=a(1)=1, a(2)=2.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =5a(4) =11a(5) =22a(6) =43a(7) =85a(8) =170a(9) =341a(10) =683a(11) =1366a(12) =2731a(13) =5461a(14) =10922a(15) =21845a(16) =43691a(17) =87382a(18) =174763a(19) =349525a(20) =699050a(21) =1398101a(22) =2796203a(23) =5592406a(24) =11184811a(25) =22369621a(26) =44739242a(27) =89478485a(28) =178956971a(29) =357913942

External references