A048190 - OEIS

%I #16 Sep 23 2022 05:38:25

%S 120,304,624,628,738,1192,1348,1528,1956,2212,3208,3276,3476,3708,

%T 3748,4336,5876,5952,6282,6402,6632,7468,7528,7944,7976,8488,8552,

%U 8688,12762,12872,13972,15348,15536,15858,15868,17556,17944,18008,18552,19520,20464,22734

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

%H Amiram Eldar, <a href="/A048190/b048190.txt">Table of n, a(n) for n = 1..4309</a> (terms 1..81 from Michel Marcus)

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

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

%Y Cf. A000010, A005114, A048188, A048189, A048191.

%K nonn

%O 1,1

%A _Naohiro Nomoto_

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