A039607 Numbers whose base-12 representation has the same nonzero number of 1's and 5's.

17, 61, 149, 173, 185, 197, 204, 206, 207, 208, 210, 211, 212, 213, 214, 215, 221, 233, 245, 257, 269, 281, 305, 349, 449, 493, 593, 637, 721, 732, 734, 735, 736, 738, 739, 740, 741, 742, 743, 745, 757, 769, 793, 805, 817, 829, 841, 853, 881, 925, 1025

Offset

1,1

Links

Table of n, a(n) for n=1..51.

Mathematica

Select[Range[1500], DigitCount[#, 12, 1]== DigitCount[#, 12, 5] >0&]  (* Harvey P. Dale, Mar 13 2011 *)

Crossrefs

Sequence in context: A141853 A139906 A117874 * A142299 A211579 A211593

Adjacent sequences: A039604 A039605 A039606 * A039608 A039609 A039610

Keyword

nonn,base,easy

Author

Olivier Gérard

Status

approved