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A064375 DivisorSigma[2,x]>EulerPhi[x]^3. 1
2, 3, 4, 6, 8, 10, 12, 14, 18, 20, 24, 30, 36, 42, 60 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

FORMULA

Solutions to A001157[x]>A000010[x]^3

EXAMPLE

d-square sums:{5, 10, 21, 50, 85, 130, 210, 250, 455, 546, 850, 1300, 1911, 2500, 5460} phi-cubes:{1, 8, 8, 8, 64, 64, 64, 216, 216, 512, 512, 512, 1728, 1728, 4096} differences:{4, 2, 13, 42, 21, 66, 146, 34, 239, 34, 338, 788, 183, 772, 1364} Sequence is believed to be full.

CROSSREFS

A001157, A000010, A055234.

Sequence in context: A011862 A122957 A078769 * A037229 A007183 A067783

Adjacent sequences:  A064372 A064373 A064374 * A064376 A064377 A064378

KEYWORD

nonn

AUTHOR

Labos E. (labos(AT)ana.sote.hu), Sep 27 2001

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Last modified February 17 17:51 EST 2012. Contains 206061 sequences.