A039473 Numbers whose base-11 representation has the same nonzero number of 4's and 6's.

50, 70, 171, 191, 292, 312, 413, 433, 490, 501, 512, 523, 545, 550, 551, 552, 553, 555, 557, 558, 559, 560, 567, 578, 589, 600, 655, 675, 730, 741, 752, 763, 770, 771, 772, 773, 775, 777, 778, 779, 780, 785, 807, 818, 829, 840, 897, 917, 1018, 1038

Offset

1,1

Links

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

Mathematica

okQ[n_]:=Module[{dc4=DigitCount[n, 11, 4]}, dc4>0&&dc4==DigitCount[n, 11, 6]]
Select[Range[1100], okQ]  (* Harvey P. Dale, Jan 09 2011 *)

Crossrefs

Sequence in context: A224559 A272607 A224552 * A309123 A146170 A367708

Adjacent sequences: A039470 A039471 A039472 * A039474 A039475 A039476

Keyword

nonn,base,easy

Author

Olivier Gérard

Status

approved