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A130232 a(1) = 0; a(n) = a(n-1) + (number of times the digit 0 has appeared in the sequence so far). 2
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 16, 18, 20, 23, 26, 29, 32, 35, 38, 41, 44, 47, 50, 54, 58, 62, 66, 70, 75, 80, 86, 92, 98, 104, 111, 118, 125, 132, 139, 146, 153, 160, 168, 176, 184, 192, 200, 210, 221, 232, 243, 254, 265, 276, 287, 298, 309, 321, 333, 345, 357, 369 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..65.

MAPLE

A130232 := proc(n)

    option remember;

    if n = 1 then

        0;

    else

        a := procname(n-1) ;

        for j from 1 to n-1 do

            for d in convert(procname(j), base, 10) do

                if d = 0 then

                    a := a+1 ;

                end if;

            end do:

        end do:

        a+1 ;

    end if;

end proc:

seq(A130232(n), n=1..80) ; # R. J. Mathar, Aug 06 2016

CROSSREFS

Sequence in context: A033062 A060472 A130514 * A103969 A271168 A292514

Adjacent sequences:  A130229 A130230 A130231 * A130233 A130234 A130235

KEYWORD

base,easy,nonn

AUTHOR

Eric Angelini, Aug 05 2007

EXTENSIONS

Corrected by R. J. Mathar, Aug 06 2016

STATUS

approved

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Last modified November 18 17:33 EST 2019. Contains 329287 sequences. (Running on oeis4.)