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A140694 A014963(n) * A063659(n). 0
1, 4, 9, 6, 25, 6, 49, 12, 24, 10, 121, 9, 169, 14 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

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

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

LINKS

Table of n, a(n) for n=1..14.

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

Cf. A140579, A014963, A008683.

Sequence in context: A141553 A095065 A061207 * A152454 A287932 A074767

Adjacent sequences:  A140691 A140692 A140693 * A140695 A140696 A140697

KEYWORD

nonn

AUTHOR

Gary W. Adamson & Mats Granvik, May 23 2008

STATUS

approved

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Last modified March 19 15:02 EDT 2019. Contains 321330 sequences. (Running on oeis4.)