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 A066696 Numbers k such that Euler phi(k) / Carmichael lambda(k) = 14. 0
 1247, 1421, 2059, 2494, 2842, 3053, 3479, 3683, 4118, 4859, 5537, 6106, 6119, 6931, 6958, 7366, 8023, 8471, 9017, 9653, 9718, 9947, 10277, 10991, 11074, 11711, 12083, 12238, 13427, 13769, 13862, 13987, 14239, 14351, 15863, 16046, 16942 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Table of n, a(n) for n=1..37. PROG (PARI) {cmf(f)=if( ((f[1]==2)&&(f[2]>2)), eulerphi(f[1]^f[2])/2, eulerphi(f[1]^f[2])) } {cl(f)= k=factor(f); l=1; for(x=1, omega(f), l=lcm(l, cmf([k[x, 1], k[x, 2]]))); l } {A062377(n)=eulerphi(n)/cl(n)} for(x=1, 30001, if(A062377(x)==14, print1(x, ", "))) (PARI) isok(k) = eulerphi(k)/lcm(znstar(k)[2]) == 14; \\ Michel Marcus, May 25 2022 CROSSREFS Cf. A000010, A002322. Cf. A062373, A062374, A062375, A062376, A062377. Sequence in context: A023065 A190413 A252675 * A195006 A114528 A069146 Adjacent sequences: A066693 A066694 A066695 * A066697 A066698 A066699 KEYWORD easy,nonn AUTHOR Randall L Rathbun, Jan 12 2002 EXTENSIONS Terms joined (twice) by Georg Fischer, Jul 08 2022 STATUS approved

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Last modified August 6 17:18 EDT 2024. Contains 374980 sequences. (Running on oeis4.)