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A140694
A014963(n) * A063659(n).
0
1, 4, 9, 6, 25, 6, 49, 12, 24, 10, 121, 9, 169, 14
OFFSET
1,2
COMMENTS
a(n) = n^2 iff n is prime.
a(n) = n iff mu(n) = 1.
FORMULA
A014963(n) * A063659(n). A140579 as an infinite lower triangular matrix * A063659 as a vector, where A063659 = (1, 2, 3, 3, 5, 6, 7, 6, 8, 10,...)
EXAMPLE
a(4) = 6 = A014963(4) * A063659(4) = 2 * 3.
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved