A039291 Numbers whose base-5 representation has the same nonzero number of 2's and 4's.

14, 22, 39, 47, 54, 59, 69, 70, 71, 73, 89, 97, 102, 107, 110, 111, 113, 117, 139, 147, 164, 172, 179, 184, 194, 195, 196, 198, 214, 222, 227, 232, 235, 236, 238, 242, 254, 259, 269, 270, 271, 273, 279, 284, 294, 295, 296, 298, 324, 329, 334, 344, 345, 346

Offset: 1

Author

Olivier Gérard

Keywords

• nonn
• base
• easy

Crossrefs

Cf. A007091.

Programs

Mathematica

Select[Range[400],DigitCount[#,5,2]==DigitCount[#,5,4]>0&]  (* Harvey P. Dale, Apr 26 2011 *)