a(n) = a(m) if a(m) has already occurred exactly once and n = m+[ (m+1)/2 ], else a(n) = least positive integer that has not yet occurred.

A026342

a(n) = a(m) if a(m) has already occurred exactly once and n = m+[ (m+1)/2 ], else a(n) = least positive integer that has not yet occurred.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =3a(4) =2a(5) =3a(6) =4a(7) =5a(8) =6a(9) =7a(10) =4a(11) =5a(12) =8a(13) =6a(14) =7a(15) =9a(16) =10a(17) =11a(18) =12a(19) =8a(20) =13a(21) =14a(22) =15a(23) =9a(24) =16a(25) =10a(26) =11a(27) =17a(28) =12a(29) =18

External references