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A334839
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Totients congruent to 2 mod 4 and that have multiplicity 4.
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0
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6, 18, 42, 162, 486, 1458, 4422, 6162, 14406, 19182, 22650, 26406, 39366, 77658, 143262, 412806, 527802, 564898, 843642, 981090, 1514130, 2023506, 2453922, 3050262, 3946182, 4042110, 4590306, 5010882, 6931390, 7003962, 7067622, 7195806, 7455630, 9349410, 10696170, 11092230
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OFFSET
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1,1
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LINKS
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EXAMPLE
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6 is a term since there are exactly 4 integers x for which phi(x)=6, namely 7, 9, 14, and 18.
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PROG
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(PARI) isok(m) = ((m%4)==2) && istotient(m) && (#invphi(m)==4);
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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