A052306 Product of exponents of prime factorization of n by prime signature: A005361(A025487).

1, 1, 2, 1, 3, 2, 4, 3, 1, 5, 4, 4, 2, 6, 6, 5, 3, 7, 8, 4, 6, 1, 9, 4, 8, 10, 6, 7, 2, 12, 5, 9, 12, 8, 8, 3, 15, 8, 6, 10, 9, 14, 4, 16, 10, 9, 4, 18, 12, 7, 11, 12, 16, 1, 6, 20, 12, 10, 5, 21, 16, 8, 12, 15, 18, 2, 8, 24, 18, 14, 11, 8, 16, 6, 24, 20, 9, 9, 25, 13, 18, 20, 3

Offset: 1

Author

Christian G. Bower, Nov 15 1999

Keywords

• nonn

Links

• Álvar Ibeas, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A005361, A025487.

Programs

PARI

lista() = {v = readvec("b025487.txt"); for (i=1, #v, f = factor(v[i]); print1(prod(k=1, #f~, f[k,2]), ", "););} \\ Michel Marcus, Nov 02 2014

Extensions

Offset updated by Matthew Vandermast, Nov 08 2008