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A069063 Composite n such that Sum phi(d)^2; d|n > n(n+1)/2. 0
25, 49, 55, 65, 69, 77, 85, 87, 91, 93, 95, 111, 115, 119, 121, 123, 125, 129, 133, 141, 143, 145, 155, 159, 161, 169, 175, 177, 183, 185, 187, 201, 203, 205, 209, 213, 215, 217, 219, 221, 235, 237, 245, 247, 249, 253, 259, 265, 267, 275, 287, 289, 291, 295 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..54.

FORMULA

n such that A029939(n)>n(n+1)/2

CROSSREFS

Sequence in context: A062058 A273510 A198591 * A064937 A245272 A091300

Adjacent sequences:  A069060 A069061 A069062 * A069064 A069065 A069066

KEYWORD

easy,nonn

AUTHOR

Benoit Cloitre, Apr 04 2002

STATUS

approved

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Last modified June 25 06:20 EDT 2021. Contains 345452 sequences. (Running on oeis4.)