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A082060 Numbers n such that n and phi(n) have the same distinct decimal digits. 3
1, 21, 63, 101, 233, 291, 502, 677, 1021, 1031, 1051, 1061, 1091, 1201, 1226, 1301, 1601, 1801, 1901, 2011, 2201, 2333, 2383, 2393, 2518, 2633, 2677, 2700, 2767, 2817, 2833, 2991, 3011, 3023, 3122, 3203, 3253, 3323, 3623, 3677, 3767, 3823, 3923, 3989 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Contains A113781 as a subsequence. - M. F. Hasler, Nov 28 2007

Numbers n such that n and phi(n) have the same decimal digits = A115921. - Jaroslav Krizek, Nov 13 2014

LINKS

Table of n, a(n) for n=1..44.

EXAMPLE

n=502 is a member since phi[502]=250

PROG

(PARI) for(n=1, 10^4, if(Set(Vec(Str(n)))==Set(Vec(Str(eulerphi(n)))), print1(n", "))) \\ M. F. Hasler, Nov 28 2007

(Python)

from sympy import totient

A082060_list = [n for n in range(1, 10**4) if set(str(totient(n))) == set(str(n))] # Chai Wah Wu, Dec 13 2015

CROSSREFS

Cf. A000005, A000010, A082059, A115921, A113781, A113622, A069215, A072395, A113781.

Sequence in context: A219856 A195106 A143203 * A025525 A033850 A251213

Adjacent sequences:  A082057 A082058 A082059 * A082061 A082062 A082063

KEYWORD

base,nonn

AUTHOR

Labos Elemer, Apr 04 2003

EXTENSIONS

Definition and comment corrected by Jaroslav Krizek, Nov 13 2014

STATUS

approved

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Last modified September 17 10:52 EDT 2019. Contains 327129 sequences. (Running on oeis4.)