A037873 (1/2)*Sum{|d(i)-e(i)|}, where Sum{d(i)*5^i} is base 5 representation of n and e(i) are digits d(i) in nonincreasing order, for i=0,1,...,m.

0, 0, 0, 0, 1, 0, 0, 0, 0, 2, 1, 0, 0, 0, 3, 2, 1, 0, 0, 4, 3, 2, 1, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 2, 1, 0, 0, 0, 3, 2, 1, 0, 0, 4, 3, 2, 1, 0, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 2, 1, 0, 0, 0, 3, 2, 1, 0, 0, 4, 3, 2, 1, 0, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 3, 2, 1, 1, 1, 3

Offset

1,10

Links

Table of n, a(n) for n=1..90.

Maple

A037873 := proc(n)
    local a, dgs, dgsE ;
    a := 0 ;
    dgs := convert(n, base, 5);
    dgsE := sort(dgs, `>`) ;
    for i from 1 to nops(dgs) do
        a := a+ abs(op(i, dgs)-op(i, dgsE)) ;
    end do:
    a/2 ;
end proc: # R. J. Mathar, Oct 19 2015

Crossrefs

Sequence in context: A198379 A079680 A037855 * A036869 A145466 A036868

Adjacent sequences: A037870 A037871 A037872 * A037874 A037875 A037876

Keyword

nonn,base

Author

Clark Kimberling

Extensions

Definition swapped with A037882. - R. J. Mathar, Oct 19 2015

Status

approved