a(n) = a(m) if a(m) has already occurred exactly once and n = a(m) + m + 3, else a(n) = least positive integer that has not yet occurred.
A026280
a(n) = a(m) if a(m) has already occurred exactly once and n = a(m) + m + 3, else a(n) = least positive integer that has not yet occurred.
Terms
- a(0) =1a(1) =2a(2) =3a(3) =4a(4) =1a(5) =5a(6) =2a(7) =6a(8) =3a(9) =7a(10) =4a(11) =8a(12) =9a(13) =5a(14) =10a(15) =11a(16) =6a(17) =12a(18) =13a(19) =7a(20) =14a(21) =15a(22) =8a(23) =16a(24) =9a(25) =17a(26) =18a(27) =10a(28) =19a(29) =11
External references
- oeis: A026280