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A280495
a(n) = A032742(A250245(n)).
4
1, 1, 1, 2, 1, 3, 1, 4, 3, 5, 1, 6, 1, 7, 5, 8, 1, 9, 1, 10, 9, 11, 1, 12, 5, 13, 7, 14, 1, 15, 1, 16, 13, 17, 7, 18, 1, 19, 21, 20, 1, 27, 1, 22, 11, 23, 1, 24, 7, 25, 25, 26, 1, 21, 13, 28, 33, 29, 1, 30, 1, 31, 19, 32, 19, 39, 1, 34, 37, 35, 1, 36, 1, 37, 17, 38, 11, 63, 1, 40, 15, 41, 1, 54, 31, 43, 45, 44, 1, 33, 17, 46, 57, 47, 37, 48, 1, 49, 27, 50, 1
OFFSET
1,4
LINKS
FORMULA
a(n) = A032742(A250245(n)).
a(n) = A250245(n) / A020639(n). [Because A250245 preserves the smallest prime factor of n.]
PROG
(Scheme) (define (A280495 n) (A032742 (A250245 n)))
CROSSREFS
Differs from related A280496 and A280498 for the first time at n=33, where a(33) = 13, while A280496(33) = A280498(33) = 15.
Differs from related A280497 for the first time at n=42, where a(42) = 27, while A280497(42) = 21.
Sequence in context: A291329 A291328 A280497 * A302042 A280498 A280496
KEYWORD
nonn
AUTHOR
Antti Karttunen, Jan 09 2017
STATUS
approved