OFFSET
1,2
COMMENTS
The sequence is conjectured to be a permutation of the positive integers. In the first 10000 terms, other than the first three terms, there are thirty-five fixed points, the last being 2051. It is plausible no more exist although this is unknown.
EXAMPLE
a(9) = 10 as Sum_{k=1..8} A001065(a(k)) = 0 + 1 + 1 + 3 + 1 + 6 + 7 + 1 = 20, and 10 is the smallest unused number that shares a factor with 20.
CROSSREFS
KEYWORD
nonn
AUTHOR
Scott R. Shannon, Nov 02 2022
STATUS
approved