A039311 Numbers whose base-7 representation has the same nonzero number of 0's and 4's.

28, 53, 77, 102, 126, 151, 175, 197, 198, 199, 201, 202, 203, 210, 217, 231, 238, 249, 273, 298, 322, 354, 361, 368, 372, 373, 374, 376, 377, 382, 389, 396, 420, 445, 469, 494, 518, 540, 541, 542, 544, 545, 546, 553, 560, 574, 581, 592, 616, 641, 665, 697

Offset

1,1

Links

Table of n, a(n) for n=1..52.

Mathematica

Select[Range[700], DigitCount[#, 7, 0]==DigitCount[#, 7, 4]>0&] (* Harvey P. Dale, Jul 25 2016 *)

Crossrefs

Cf. A007093.

Sequence in context: A216303 A261105 A043134 * A043914 A044080 A044461

Adjacent sequences: A039308 A039309 A039310 * A039312 A039313 A039314

Keyword

nonn,base,easy

Author

Olivier Gérard

Status

approved