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A199105 Numbers n such that lambda(n) < A011773(n) < phi(n), where lambda is the Carmichael reduced totient function and phi the Euler totient function. 0
24, 48, 56, 72, 80, 88, 96, 112, 144, 152, 160, 168, 176, 184, 192, 208, 216, 224, 240, 248, 264, 288, 304, 320, 336, 344, 352, 368, 376, 384, 392, 400, 416, 432, 448, 456, 464, 472, 480, 496, 504, 528, 536, 552, 560, 568, 576, 592, 608, 616, 624 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

A002322(n) divides A011773(n) and A011773(n) divides A000010(n).

LINKS

Table of n, a(n) for n=1..51.

MATHEMATICA

A011773[p_, s_] := (p-1)*p^(s-1); A011773[n_] := {aux=1; Do[aux=LCM[aux, A011773[FactorInteger[n][[i, 1]], FactorInteger[n][[i, 2]]]], {i, Length[FactorInteger[n]]}]; aux}[[1]]; Select[Range[1000], CarmichaelLambda[#] < A011773[#] < EulerPhi[#]&]

CROSSREFS

Cf. A002322, A011773, A000010.

Sequence in context: A098427 A105651 A105779 * A074698 A292354 A257861

Adjacent sequences:  A199102 A199103 A199104 * A199106 A199107 A199108

KEYWORD

nonn

AUTHOR

José María Grau Ribas, Jan 31 2012

STATUS

approved

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Last modified September 22 12:19 EDT 2019. Contains 327307 sequences. (Running on oeis4.)