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A023058 Numbers k such that k and 2k are anagrams of each other in base 3 (k is written here in base 3). 1
1012, 10012, 10120, 10122, 10212, 100012, 100120, 100122, 100212, 101200, 101220, 101222, 102120, 102122, 102212, 1000012, 1000120, 1000122, 1000212, 1001200, 1001220, 1001222, 1002120, 1002122, 1002212, 1012000, 1012200, 1012220, 1012222 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
If a*10^m + b is a term, where b < 10^(m-1), then so is a*10^k+b for all k > m. - Robert Israel, Feb 21 2017
LINKS
MAPLE
f:= proc(n) local L, M;
L:= convert(n, base, 3);
M:= convert(2*n, base, 3);
if sort(L) = sort(M) then add(L[i]*10^(i-1), i=1..nops(L)) else NULL fi
end proc:
map(f, [$1..1000]); # Robert Israel, Feb 21 2017
CROSSREFS
Sequence in context: A159774 A072140 A080467 * A223077 A206191 A249987
KEYWORD
nonn,base
AUTHOR
STATUS
approved

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Last modified March 19 02:44 EDT 2024. Contains 370952 sequences. (Running on oeis4.)