A039358 Numbers whose base-9 representation has the same nonzero number of 0's and 2's.

18, 83, 99, 163, 165, 166, 167, 168, 169, 170, 171, 189, 198, 207, 216, 225, 234, 245, 261, 326, 342, 407, 423, 488, 504, 569, 585, 650, 666, 740, 748, 750, 751, 752, 753, 754, 755, 758, 767, 776, 785, 794, 803, 812, 828, 892, 894, 895, 896, 897, 898, 899, 900

Offset

1,1

Links

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

Mathematica

Select[Range[1000], DigitCount[#, 9, 0]==DigitCount[#, 9, 2]>0&] (* Harvey P. Dale, Jan 03 2024 *)

Prog

(MATLAB)
a = NaN(53, 1); k = 0; j = 1;
while any(isnan(a))
    d = dec2base(k, 9)-'0';
    n1 = sum(d==0); n2 = sum(d==2);
    if n1==n2 && n1 > 0
        a(j) = k; j = j+1;
    end
    k = k+1;
end
disp(regexprep(num2str(a'), ' +', ', ')) % Chris R. Rehmann, Apr 03 2026

Crossrefs

Cf. A007095, A039078.

Cf. A039357, A039359, A039360, A039361, A039362, A039363, A039364.

Cf. A039365.

Sequence in context: A382147 A159460 A043181 * A043961 A067984 A372400

Adjacent sequences: A039355 A039356 A039357 * A039359 A039360 A039361

Keyword

nonn,base,easy

Author

Olivier Gérard

Status

approved