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Search: id:A063470
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OFFSET
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1,1
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COMMENT
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"Phi[n]=k*Tau[n] has at most finitely many solutions for any constant k or even for slowly increasing functions like k(n)=n^(epsilon)." - Labos E. (labos(AT)ana.sote.hu), Jul 20 2001
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PROGRAM
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(PARI) for(n=1, 10^6, if(numdiv(n)*4==eulerphi(n), print(n)))
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CROSSREFS
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Cf. A062516.
Cf. A112954, A020488, A063469.
Sequence in context: A043240 A044020 A076772 this_sequence A089715 A074757 A039327
Adjacent sequences: A063467 A063468 A063469 this_sequence A063471 A063472 A063473
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KEYWORD
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fini,nonn
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AUTHOR
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Jason Earls (zevi_35711(AT)yahoo.com), Jul 26 2001
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