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A039784
phi(n) is equal to the product of the dual prime-power components of n.
0
1, 2, 12, 48, 5832
OFFSET
1,2
EXAMPLE
phi(5832)=1944, 5832=2^3*3^6, (3^2)*(6^3)=1944.
CROSSREFS
Sequence in context: A085495 A119978 A139234 * A352026 A323678 A028243
KEYWORD
nonn
EXTENSIONS
No others < 7*10^7. - Naohiro Nomoto, Jun 23 2001
STATUS
approved