Number of 1's in n-th generation of A306211.

Terms

a(0) =1a(1) =2a(2) =2a(3) =3a(4) =4a(5) =6a(6) =11a(7) =20a(8) =35a(9) =61a(10) =103a(11) =170a(12) =278a(13) =451a(14) =728a(15) =1165a(16) =1849a(17) =2916a(18) =4577a(19) =7165a(20) =11205a(21) =17531a(22) =27467a(23) =43119a(24) =67823a(25) =106854a(26) =168523a(27) =265878a(28) =419356a(29) =660919