OFFSET
1,1
COMMENTS
LINKS
Rémy Sigrist, C program
FORMULA
a(n+1) = A005117(a(n)).
EXAMPLE
a(1) = 4 and the fourth squarefree number is 5, so a(2) = 5.
PROG
(C) See Links section.
CROSSREFS
KEYWORD
nonn
AUTHOR
Rémy Sigrist, Aug 05 2022
STATUS
approved