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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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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; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| 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
| Robert Israel, Table of n, a(n) for n = 1..340
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MAPLE
| (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
| Do[If[Union[IntegerDigits[6k+1]]=={2, 3}, Print[6k+1]], {k, 100000}]
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CROSSREFS
| Subset of A152824.
Sequence in context: A158226 A205273 A205266 * A139233 A205265 A153165
Adjacent sequences: A152831 A152832 A152833 * A152835 A152836 A152837
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KEYWORD
| nonn,base
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AUTHOR
| Zak Seidov (zakseidov(AT)yahoo.com), Dec 14 2008
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EXTENSIONS
| Extended by Robert Israel, Dec 14 2008
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