A026338 a(n) = a(m) if a(m) has already occurred exactly once and n = m+[ m/2 ]+1, else a(n) = least positive integer that has not yet occurred.

1, 1, 2, 3, 2, 4, 3, 5, 6, 4, 7, 8, 5, 6, 9, 10, 7, 11, 8, 12, 13, 14, 9, 15, 10, 16, 17, 11, 18, 19, 12, 13, 20, 14, 21, 22, 15, 23, 24, 16, 17, 25, 26, 18, 27, 19, 28, 29, 30, 20, 31, 32, 21, 33, 22, 34, 35, 23, 24, 36, 37, 38, 39, 25, 26, 40

Offset

1,3

Links

Table of n, a(n) for n=1..66.

Crossrefs

Sequence in context: A243290 A085238 A214371 * A026242 A130526 A351955

Adjacent sequences: A026335 A026336 A026337 * A026339 A026340 A026341

Keyword

nonn

Author

Clark Kimberling

Status

approved