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A114076 phi(n) times n is a cube. 0
1, 4, 32, 50, 72, 225, 256, 400, 576, 900, 1944, 2048, 2166, 2312, 2646, 3200, 4107, 4563, 4608, 5202, 6075, 6250, 7200, 7225, 15125, 15552, 16384, 16428, 17328, 18252, 18496, 21168, 23762, 24300, 25600, 28125, 28900, 35378, 36864, 41616, 50000, 52488, 57600 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..43.

EXAMPLE

phi(1944) * 1944 = 1259712 = 108^3.

PROG

(PARI) isok(n) = ispower(n*eulerphi(n), 3); \\ Michel Marcus, Jan 22 2014

CROSSREFS

Sequence in context: A068088 A118901 A275713 * A078092 A076137 A138340

Adjacent sequences:  A114073 A114074 A114075 * A114077 A114078 A114079

KEYWORD

nonn

AUTHOR

Giovanni Resta, Feb 13 2006

EXTENSIONS

More terms from Michel Marcus, Jan 22 2014

STATUS

approved

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Last modified October 16 03:34 EDT 2019. Contains 328040 sequences. (Running on oeis4.)