A039391 Numbers whose base-9 representation has the same nonzero number of 6's and 8's.

62, 78, 143, 159, 224, 240, 305, 321, 386, 402, 467, 483, 494, 503, 512, 521, 530, 539, 557, 558, 559, 560, 561, 562, 563, 565, 629, 645, 654, 663, 672, 681, 690, 699, 702, 703, 704, 705, 706, 707, 709, 717, 791, 807, 872, 888, 953, 969, 1034, 1050

Offset

1,1

Links

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

Mathematica

Select[Range[1100], DigitCount[#, 9, 6]==DigitCount[#, 9, 8]>0&] (* Harvey P. Dale, Mar 29 2015 *)

Prog

(MATLAB) x = 0:1050; d = dec2base(x, 9)-'0'; s1 = sum(d==6, 2); s2 = sum(d==8, 2); a = x(s1==s2 & s1>0); disp(regexprep(num2str(a), ' +', ', '))  % Chris R. Rehmann, Apr 14 2026

Crossrefs

Cf. A007095, A039110.

Cf. A039390.

Cf. A039364, A039371, A039377, A039382, A039386, A039389, A039392.

Sequence in context: A074772 A074771 A342258 * A043214 A043994 A039479

Adjacent sequences: A039388 A039389 A039390 * A039392 A039393 A039394

Keyword

nonn,base,easy

Author

Olivier Gérard

Status

approved