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Search: id:A111066
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| A111066 |
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Numbers with digits 1 and 2 and at least one of each. |
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+0
2
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| 12, 21, 112, 121, 122, 211, 212, 221, 1112, 1121, 1122, 1211, 1212, 1221, 1222, 2111, 2112, 2121, 2122, 2211, 2212, 2221, 11112, 11121, 11122, 11211, 11212, 11221, 11222, 12111, 12112, 12121, 12122, 12211, 12212, 12221, 12222, 21111, 21112
(list; graph; listen)
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OFFSET
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1,1
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MATHEMATICA
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FromDigits /@ Select[ IntegerDigits[ Range[210], 3], Union[ # ] == {1, 2} &] (* Robert G. Wilson v *)
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CROSSREFS
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Cf. A043494, A037415, A062289, A000225.
Sequence in context: A048344 A039402 A043225 this_sequence A044005 A134514 A030299
Adjacent sequences: A111063 A111064 A111065 this_sequence A111067 A111068 A111069
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KEYWORD
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easy,nonn
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AUTHOR
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Alexandre Wajnberg & Youri Mora (alexandre.wajnberg(AT)skynet.be), Oct 08 2005
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EXTENSIONS
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More terms from Robert G. Wilson v (rgwv(at)rgwv.com), Oct 09 2005
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