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A039403 Numbers whose base-10 representation has the same nonzero number of 1's and 3's. 0
13, 31, 103, 123, 130, 132, 134, 135, 136, 137, 138, 139, 143, 153, 163, 173, 183, 193, 213, 231, 301, 310, 312, 314, 315, 316, 317, 318, 319, 321, 341, 351, 361, 371, 381, 391, 413, 431, 513, 531, 613, 631, 713, 731, 813, 831, 913, 931, 1003, 1023 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
MATHEMATICA
Select[Range[1100], DigitCount[#, 10, 1]==DigitCount[#, 10, 3]>0&] (* Harvey P. Dale, May 09 2019 *)
CROSSREFS
Sequence in context: A350095 A160772 A271575 * A062339 A368051 A043226
KEYWORD
nonn,base,easy
AUTHOR
STATUS
approved

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Last modified March 19 06:05 EDT 2024. Contains 370952 sequences. (Running on oeis4.)