A108460 a(n) = A051707(A025487).

1, 1, 3, 5, 8, 23, 23, 91, 52, 60, 143, 328, 339, 161, 686, 1085, 1730, 404, 2911, 2798, 3387, 855, 3901, 7568, 1011, 11020, 17006, 10007, 7377, 18781, 29541, 2440, 38682, 85826, 28350, 46410, 79634, 28321, 105928, 5804, 118848, 126863, 77611, 100646

Offset: 0

Author

Christian G. Bower, Jun 03 2005

Keywords

• nonn

Comments

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

Pairs (j,k) must satisfy j>1, k>=1; (a,b)*(x,y)=(a*x,b*y); unit is (1,1).

Crossrefs

Cf. A108463.

Extensions

More terms from David Wasserman, May 16 2008