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A108463 a(n) = A108462(A025487). 2
1, 2, 9, 15, 31, 92, 109, 444, 203, 339, 712, 1903, 1663, 1043, 4070, 7279, 10105, 2998, 20061, 16601, 25904, 4140, 27036, 51551, 8406, 86713 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Number of factorizations of (n,n) into pairs (i,j) by prime signature.

Pairs (i,j) must satisfy i,j>=1, not both 1; (a,b)*(x,y)=(a*x,b*y)

LINKS

Table of n, a(n) for n=0..25.

CROSSREFS

Sequence in context: A324522 A319967 A063094 * A056724 A295732 A083174

Adjacent sequences:  A108460 A108461 A108462 * A108464 A108465 A108466

KEYWORD

nonn,more

AUTHOR

Christian G. Bower, Jun 03 2005

STATUS

approved

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Last modified June 16 14:07 EDT 2021. Contains 345057 sequences. (Running on oeis4.)