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A039583
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Numbers n such that representation in base 6 has same number of 1's, 2's and 3's.
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1
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0, 4, 5, 24, 28, 29, 30, 34, 35, 51, 56, 81, 91, 116, 121, 144, 148, 149, 168, 172, 173, 174, 178, 179, 180, 184, 185, 204, 208, 209, 210, 214, 215, 231, 236, 291, 306, 310, 311, 315, 321, 326, 336, 340, 341, 350, 356, 375, 380, 411, 416, 441, 451, 471, 486
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graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,2
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LINKS
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Robert Israel, Table of n, a(n) for n = 1..10000
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MAPLE
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filter:= proc(n) local L, x;
L:= convert(n, base, 6);
x:= numboccur(1, L);
numboccur(2, L) = x and numboccur(3, L) = x
end proc:
select(filter, [$0..1000]); # Robert Israel, Aug 16 2018
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MATHEMATICA
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okQ[n_]:=Module[{dc6=DigitCount[n, 6]}, dc6[[1]]==dc6[[2]]==dc6[[3]]]; Select[ Range[0, 500], okQ] (* Harvey P. Dale, Nov 05 2011 *)
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CROSSREFS
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Sequence in context: A171885 A331261 A063986 * A042123 A041531 A089499
Adjacent sequences: A039580 A039581 A039582 * A039584 A039585 A039586
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KEYWORD
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nonn,base,easy
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AUTHOR
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Olivier Gérard
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STATUS
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approved
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