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.

1, 2, 3, 4, 1, 5, 2, 6, 3, 7, 4, 8, 9, 5, 10, 11, 6, 12, 13, 7, 14, 15, 8, 16, 9, 17, 18, 10, 19, 11, 20, 21, 12, 22, 13, 23, 24, 14, 25, 15, 26, 27, 16, 28, 29, 17, 30, 18, 31, 32, 19, 33, 34, 20, 35, 21, 36, 37, 22, 38, 39, 23, 40, 24, 41, 42

Offset

1,2

Links

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

Crossrefs

Sequence in context: A083480 A179547 A023133 * A115994 A276951 A071437

Adjacent sequences: A026277 A026278 A026279 * A026281 A026282 A026283

Keyword

nonn

Author

Clark Kimberling

Status

approved