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A004426 Arithmetic mean of digits of n (rounded down). 12
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 0, 0, 1, 1, 1, 2, 2, 2 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

A004427(n) <= a(n); a(A061383(n)) = A004427(A061383(n)); a(A000040(n)) = A074461(n). [From Reinhard Zumkeller, May 27 2010]

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 0..10000

Index entries for Colombian or self numbers and related sequences

FORMULA

a(n) = floor(A007953(n)/A055642(n)). [From Reinhard Zumkeller, May 27 2010]

MATHEMATICA

Table[Floor[Mean[IntegerDigits[n]]], {n, 0, 99}] (* Enrique Pérez Herrero, Sep 28 2013 *)

PROG

(Haskell)

a004426 n = (a007953 n) `div` (a055642 n)

-- Reinhard Zumkeller, Jun 18 2013

CROSSREFS

Cf. A175688.

Sequence in context: A031298 A004428 A004429 * A262188 A004430 A285094

Adjacent sequences:  A004423 A004424 A004425 * A004427 A004428 A004429

KEYWORD

nonn,base

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified April 18 10:44 EDT 2019. Contains 322209 sequences. (Running on oeis4.)