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A140694 A014963(n) * A063659(n). 0

%I #3 Apr 05 2012 18:13:12

%S 1,4,9,6,25,6,49,12,24,10,121,9,169,14

%N A014963(n) * A063659(n).

%C a(n) = n^2 iff n is prime.

%C a(n) = n iff mu(n) = 1.

%F 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,...)

%e a(4) = 6 = A014963(4) * A063659(4) = 2 * 3.

%Y Cf. A140579, A014963, A008683.

%K nonn

%O 1,2

%A _Gary W. Adamson_ & _Mats Granvik_, May 23 2008

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Last modified April 24 07:17 EDT 2024. Contains 371920 sequences. (Running on oeis4.)