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A068564 Numbers n such that phi(n)=2*tau(n)^2. 0
51, 117, 148, 255, 585, 608, 740, 876, 2000, 2912, 3040, 3552, 3876, 3978, 4380, 6528, 7776, 8892, 9324, 14560, 14688, 14976, 15912, 17760, 18564, 19380, 19890, 32640, 38304, 38880, 44460, 46620, 73440, 74880, 79560, 92820 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..36.

CROSSREFS

Sequence in context: A044238 A044619 A031894 * A063314 A129298 A065010

Adjacent sequences:  A068561 A068562 A068563 * A068565 A068566 A068567

KEYWORD

easy,nonn

AUTHOR

Benoit Cloitre, Mar 25 2002

STATUS

approved

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Last modified November 12 09:29 EST 2019. Contains 329054 sequences. (Running on oeis4.)