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Search: id:A152834
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| A152834 |
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Numbers of form 6k+1 that use only digits 2 and 3. |
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+0
3
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| 223, 2233, 2323, 3223, 22333, 23233, 23323, 32233, 32323, 33223, 222223, 223333, 232333, 233233, 233323, 322333, 323233, 323323, 332233, 332323, 333223, 2222233, 2222323, 2223223, 2232223, 2233333, 2322223, 2323333, 2332333, 2333233, 2333323, 3222223
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Equivalently, sequences of 2's and 3's, ending with 3, where the number of 2's is congruent to 2 mod 3. - Franklin T. Adams-Watters, Dec 14 2008
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LINKS
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Robert Israel, Table of n, a(n) for n = 1..340
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MAPLE
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(Maple program from Robert Israel:)
M:= proc(n) option remember; (map(t -> 2*10^n+t, M(n-1)) union map(t ->
3*10^n+t, M(n-1))) end proc;
M(0):= {2, 3};
select(t -> (t mod 6 = 1), `union`(seq(M(n), n=1..9)));
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MATHEMATICA
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Do[If[Union[IntegerDigits[6k+1]]=={2, 3}, Print[6k+1]], {k, 100000}]
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CROSSREFS
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Subset of A152824.
Sequence in context: A094459 A108819 A158226 this_sequence A139233 A153165 A094491
Adjacent sequences: A152831 A152832 A152833 this_sequence A152835 A152836 A152837
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KEYWORD
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nonn,base
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AUTHOR
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Zak Seidov (zakseidov(AT)yahoo.com), Dec 14 2008
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EXTENSIONS
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Extended by Robert Israel, Dec 14 2008
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