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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
OFFSET
1,1
LINKS
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. A270266.
Sequence in context: A277943 A251945 A340843 * A237010 A256765 A264109
KEYWORD
nonn
AUTHOR
Michel Marcus, Mar 14 2016
EXTENSIONS
More terms from Jinyuan Wang, Feb 13 2020
STATUS
approved