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A039320 Numbers whose base-7 representation has the same nonzero number of 2's and 4's. 0
18, 30, 67, 79, 102, 109, 123, 126, 127, 129, 131, 132, 137, 144, 165, 177, 198, 205, 210, 211, 213, 215, 216, 219, 233, 240, 263, 275, 312, 324, 361, 373, 410, 422, 445, 452, 466, 469, 470, 472, 474, 475, 480, 487, 508, 520, 541, 548, 553, 554, 556, 558 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..52.

MATHEMATICA

Select[Range[600], DigitCount[#, 7, 2]==DigitCount[#, 7, 4]>0&] (* Harvey P. Dale, Nov 20 2016 *)

CROSSREFS

Cf. A007093.

Sequence in context: A161164 A092357 A141115 * A043143 A043923 A160916

Adjacent sequences:  A039317 A039318 A039319 * A039321 A039322 A039323

KEYWORD

nonn,base,easy

AUTHOR

Olivier Gérard

STATUS

approved

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Last modified August 16 05:55 EDT 2022. Contains 356160 sequences. (Running on oeis4.)