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A270265 Numbers that are values of the totient function (A002202) but not of the reduced totient function (A002174). 1
1936, 3872, 6348, 7744, 9196, 15004, 15488, 18392, 20812, 21160, 22264, 30008, 35332, 36784, 38416, 41624, 42320, 44528, 51304, 58564, 63916, 65596, 70664, 73084, 73568, 76832, 79420, 81796, 82668, 83248, 84100, 84640, 86152, 96040, 102124, 102608, 109384, 110836 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..38.

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. A270266.

Sequence in context: A227491 A277943 A251945 * A237010 A256765 A264109

Adjacent sequences:  A270262 A270263 A270264 * A270266 A270267 A270268

KEYWORD

nonn

AUTHOR

Michel Marcus, Mar 14 2016

EXTENSIONS

More terms from Jinyuan Wang, Feb 13 2020

STATUS

approved

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Last modified April 5 20:24 EDT 2020. Contains 333260 sequences. (Running on oeis4.)