A004426 - OEIS

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A004426

Arithmetic mean of digits of n (rounded down).

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

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OFFSET

0,3

COMMENTS

From Reinhard Zumkeller, May 27 2010: (Start)

A004427(n) <= a(n);

a(A061383(n)) = A004427(A061383(n));

a(A000040(n)) = A074461(n). (End)

LINKS

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

Index entries for Colombian or self numbers and related sequences

FORMULA