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Let (u1,u2) be successive untouchable numbers such that phi(u1) = phi(u2) = k; sequence gives values of k.
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%I #17 Sep 23 2022 05:38:43

%S 32,144,192,312,240,592,672,760,648,936,1600,864,1560,1224,1872,2160,

%T 2688,1920,2088,1920,3312,3732,3760,2640,3984,4240,4272,2880,4248,

%U 6432,5976,5112,7760,5280,7932,4320,8968,9000,6176,7680,10224,7560,12072,12432,12552

%N Let (u1,u2) be successive untouchable numbers such that phi(u1) = phi(u2) = k; sequence gives values of k.

%H Amiram Eldar, <a href="/A048191/b048191.txt">Table of n, a(n) for n = 1..4309</a> (terms 1..81 from Michel Marcus)

%F a(n) = A000010(A048189(n)) = A000010(A048190(n)). - _Amiram Eldar_, Sep 23 2022

%e 32 is a term since 96 and 120 are successive untouchable numbers and phi(96) = phi(120) = 32.

%e 144 is a term since 292 and 304 are successive untouchable numbers and phi(292) = phi(304) = 144.

%Y Cf. A000010, A005114, A048188, A048189, A048190.

%K nonn

%O 1,1

%A _Naohiro Nomoto_

%E Offset changed to 1 and more terms from _Michel Marcus_, Jun 08 2015