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A180157 Arithmetic mean of digits is not an integer. 3
10, 12, 14, 16, 18, 21, 23, 25, 27, 29, 30, 32, 34, 36, 38, 41, 43, 45, 47, 49, 50, 52, 54, 56, 58, 61, 63, 65, 67, 69, 70, 72, 74, 76, 78, 81, 83, 85, 87, 89, 90, 92, 94, 96, 98, 100, 101, 103, 104, 106, 107, 109, 110, 112, 113, 115, 116, 118, 119, 121, 122, 124, 125 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Complement of A061383; A180160(a(n)) > 0;

A004426(a(n)) <> A004427(a(n)).

It seems 'obvious' that a(n) ~ n; is this true? - Charles R Greathouse IV, Feb 06 2013

LINKS

R. Zumkeller, Table of n, a(n) for n = 1..10000

MATHEMATICA

Select[Range[200], !IntegerQ[Mean[IntegerDigits[#]]]&]  (* Harvey P. Dale, Mar 27 2011 *)

PROG

(PARI) is(n)=my(v=digits(n)); sum(i=1, #v, v[i])%#v>0 \\ Charles R Greathouse IV, Feb 06 2013

CROSSREFS

Cf. A007953, A055642.

Sequence in context: A247393 A055983 A318700 * A273492 A227870 A007958

Adjacent sequences:  A180154 A180155 A180156 * A180158 A180159 A180160

KEYWORD

base,nonn,easy

AUTHOR

Reinhard Zumkeller, Aug 15 2010

STATUS

approved

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Last modified April 25 13:31 EDT 2019. Contains 322461 sequences. (Running on oeis4.)