A039404 Numbers whose base-10 representation has the same nonzero number of 1's and 4's.

14, 41, 104, 124, 134, 140, 142, 143, 145, 146, 147, 148, 149, 154, 164, 174, 184, 194, 214, 241, 314, 341, 401, 410, 412, 413, 415, 416, 417, 418, 419, 421, 431, 451, 461, 471, 481, 491, 514, 541, 614, 641, 714, 741, 814, 841, 914, 941, 1004, 1024, 1034, 1040

Offset

1,1

Links

Stefano Spezia, Table of n, a(n) for n = 1..10000

Mathematica

Select[Range[1100], DigitCount[#, 10, 1]==DigitCount[#, 10, 4]>0&] (* Harvey P. Dale, Jun 09 2016 *)

Crossrefs

Sequence in context: A105869 A216298 A056034 * A043227 A044007 A366480

Adjacent sequences: A039401 A039402 A039403 * A039405 A039406 A039407

Keyword

nonn,base,easy,changed

Author

Olivier Gérard

Extensions

Terms a(51) and beyond from Stefano Spezia, Jul 17 2026

Status

approved