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A270266 Numbers that are values of the reduced totient function (A002174) but not of the totient function (A002202). 1
90, 174, 230, 234, 246, 290, 308, 318, 364, 390, 410, 414, 450, 510, 516, 530, 534, 572, 594, 638, 644, 666, 678, 680, 702, 714, 728, 740, 770, 804, 830, 846, 870, 890, 902, 948, 954, 1026, 1036, 1074, 1098, 1100, 1110, 1130, 1134, 1146, 1148, 1164, 1166, 1190, 1204 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

William D. Banks, John B. Friedlander, Florian Luca, Francesco Pappalardi, Igor E. Shparlinski, Coincidences in the values of the Euler and Carmichael functions, Acta Arithmetica 122(2006), 207-234.

CROSSREFS

Cf. A000010, A002202.

Cf. A002322, A002174.

Cf. A270265.

Sequence in context: A294310 A048705 A119895 * A255792 A255785 A119896

Adjacent sequences:  A270263 A270264 A270265 * A270267 A270268 A270269

KEYWORD

nonn

AUTHOR

Michel Marcus, Mar 14 2016

STATUS

approved

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Last modified April 3 12:37 EDT 2020. Contains 333197 sequences. (Running on oeis4.)