a(1)=4, a(2)=5; thereafter a(n) is smallest number that is greater than a(n-1) and having a unique representation as a(j) + a(k) for j<k.
A006844
a(1)=4, a(2)=5; thereafter a(n) is smallest number that is greater than a(n-1) and having a unique representation as a(j) + a(k) for j<k.
Terms
- a(0) =4a(1) =5a(2) =9a(3) =13a(4) =14a(5) =17a(6) =19a(7) =21a(8) =24a(9) =25a(10) =27a(11) =35a(12) =37a(13) =43a(14) =45a(15) =47a(16) =57a(17) =67a(18) =69a(19) =73a(20) =77a(21) =83a(22) =93a(23) =101a(24) =105a(25) =109a(26) =113a(27) =115a(28) =123a(29) =125
External references
- oeis: A006844