A039390 Numbers whose base-9 representation has the same nonzero number of 6's and 7's.

61, 69, 142, 150, 223, 231, 304, 312, 385, 393, 466, 474, 493, 502, 511, 520, 529, 538, 549, 550, 551, 552, 553, 554, 557, 565, 573, 582, 591, 600, 609, 618, 621, 622, 623, 624, 625, 626, 629, 645, 709, 717, 790, 798, 871, 879, 952, 960, 1033, 1041

Offset

1,1

Links

Table of n, a(n) for n=1..50.

Mathematica

Select[Range[1100], DigitCount[#, 9, 6]==DigitCount[#, 9, 7]>0&] (* Harvey P. Dale, Feb 23 2015 *)

Crossrefs

Cf. A007095.

Sequence in context: A284291 A045712 A090154 * A043213 A043993 A165287

Adjacent sequences: A039387 A039388 A039389 * A039391 A039392 A039393

Keyword

nonn,base,easy

Author

Olivier Gérard

Status

approved