a(n) = a(m) if a(m) has already occurred exactly once and n = a(m) + m + 4, else a(n) = least positive integer that has not yet occurred.
A026284
a(n) = a(m) if a(m) has already occurred exactly once and n = a(m) + m + 4, else a(n) = least positive integer that has not yet occurred.
Terms
- a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =1a(6) =6a(7) =2a(8) =7a(9) =3a(10) =8a(11) =4a(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) =17a(25) =9a(26) =18a(27) =19a(28) =10a(29) =20
External references
- oeis: A026284