A039316 Numbers whose base-7 representation has the same nonzero number of 1's and 4's.

11, 29, 53, 67, 74, 77, 79, 80, 82, 83, 88, 95, 109, 127, 158, 176, 197, 203, 205, 206, 208, 209, 211, 218, 232, 239, 256, 274, 305, 323, 347, 361, 368, 371, 373, 374, 376, 377, 382, 389, 424, 445, 459, 466, 469, 471, 472, 474, 475, 480, 487, 494, 508, 515

Offset

1,1

Links

Table of n, a(n) for n=1..54.

Mathematica

Select[Range[600], DigitCount[#, 7, 1]==DigitCount[#, 7, 4]>0&] (* Harvey P. Dale, Jan 14 2015 *)

Crossrefs

Cf. A007093.

Sequence in context: A049229 A282538 A236485 * A364894 A082108 A024846

Adjacent sequences: A039313 A039314 A039315 * A039317 A039318 A039319

Keyword

nonn,base,easy

Author

Olivier Gérard

Status

approved