a(1)=1. a(2n+1) = sum{k=1 to 2n} a(k). a(2n) = the smallest positive integer not yet occurring in the sequence.
A140598
a(1)=1. a(2n+1) = sum{k=1 to 2n} a(k). a(2n) = the smallest positive integer not yet occurring in the sequence.
Terms
- a(0) =1a(1) =2a(2) =3a(3) =4a(4) =10a(5) =5a(6) =25a(7) =6a(8) =56a(9) =7a(10) =119a(11) =8a(12) =246a(13) =9a(14) =501a(15) =11a(16) =1013a(17) =12a(18) =2038a(19) =13a(20) =4089a(21) =14a(22) =8192a(23) =15a(24) =16399a(25) =16a(26) =32814a(27) =17a(28) =65645a(29) =18
External references
- oeis: A140598