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A039381 Numbers whose base-9 representation has the same nonzero number of 3's and 7's. 0
34, 66, 115, 147, 196, 228, 250, 259, 268, 286, 295, 304, 306, 307, 308, 310, 311, 312, 314, 322, 358, 390, 439, 471, 520, 552, 570, 579, 588, 594, 595, 596, 598, 599, 600, 602, 606, 615, 624, 642, 682, 714, 763, 795, 844, 876, 925, 957, 979, 988, 997, 1015, 1024, 1033, 1035, 1036, 1037, 1039, 1040, 1041, 1043, 1051 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
MATHEMATICA
okQ[n_]:=Module[{dc3=DigitCount[n, 9, 3]}, dc3>0&&dc3==DigitCount[n, 9, 7]]
Select[Range[2000], okQ] (* Harvey P. Dale, Nov 26 2010 *)
CROSSREFS
Cf. A007095.
Sequence in context: A280931 A115159 A125192 * A043204 A043984 A259962
KEYWORD
nonn,base,easy
AUTHOR
EXTENSIONS
More terms from Harvey P. Dale, Nov 26 2010
STATUS
approved

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Last modified June 18 11:09 EDT 2024. Contains 373481 sequences. (Running on oeis4.)