OFFSET
1,2
COMMENTS
Numbers that (1) are either prime powers or squarefree and (2) have a primorial kernel.
LINKS
Michael De Vlieger, Table of n, a(n) for n = 1..3671
FORMULA
MATHEMATICA
Union@ Flatten@ {#, 2^Range[Log2[Last[#] ] ] } &@
FoldList[Times, 1, Prime@ Range[nn]]
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Michael De Vlieger, Jan 30 2024
STATUS
approved