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A361120
a(n) is the greatest prime factor of A360519(n) with a(1) = 1.
3
1, 3, 5, 7, 7, 3, 5, 11, 11, 3, 7, 11, 11, 5, 5, 11, 13, 13, 3, 7, 13, 13, 5, 17, 17, 7, 3, 13, 17, 17, 7, 19, 19, 5, 3, 11, 17, 17, 5, 23, 23, 19, 19, 13, 13, 5, 7, 29, 29, 31, 31, 7, 7, 37, 37, 17, 17, 41, 41, 5, 23, 23, 7, 5, 29, 29, 7, 3, 43, 43, 5, 11, 47
OFFSET
1,2
COMMENTS
See A361119 for the least prime factors.
LINKS
Rémy Sigrist, PARI program
FORMULA
a(n) = A006530(A360519(n)).
EXAMPLE
A360519(2) = 2*3 so a(2) = 3.
PROG
(PARI) See Links section.
CROSSREFS
KEYWORD
nonn,look
STATUS
approved