A393266 - OEIS

A393266

Totient numbers (A002202) k at which x/y reaches a record, where x (A006511) is the largest integer such that phi(x) = k and y (A002181) is the smallest integer such that phi(y) = k.

%I #12 Feb 14 2026 17:33:44

%S 1,4,6,12,16,40,72,96,192,240,336,432,480,576,1152,3360,4800,5280,

%T 5760,7680,15360,17280,23040,57600,63360,103680,184320,737280,921600,

%U 1198080,1658880,4976640,6635520,16588800,28200960,33177600,36495360,72990720

%N Totient numbers (A002202) k at which x/y reaches a record, where x (A006511) is the largest integer such that phi(x) = k and y (A002181) is the smallest integer such that phi(y) = k.

%H Jud McCranie, <a href="/A393266/b393266.txt">Table of n, a(n) for n = 1..58</a>

%Y Cf. A002181, A002202, A005867, A006511, A393265.

%K nonn

%O 1,2

%A _Jud McCranie_, Feb 07 2026