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A124476
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Smallest multiple of A047201(n) (i.e. numbers not divisible by 5) with only digits 6 and 7.
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0
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67, 76, 6777, 76, 7776, 6776, 776, 6777, 6677, 7776, 676, 6776, 7776, 6766, 7776, 76, 67767, 6776, 667, 7776, 676, 6777, 6776, 667, 67766, 7776, 66777777, 6766, 7776, 666777, 76, 77766, 7667, 76776, 676777, 6776, 67666, 667776, 7776, 67767, 67677
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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LINKS
| N. Hobson, Solution to Puzzle 80:"Sixes and sevens" (generalization of)
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MATHEMATICA
| f[n_] := Block[{k = n}, While[Union @ IntegerDigits[k] != {6, 7}, k += n]; k]; f /@ Select[Range[52], Mod[ #, 5] > 0 &] (*Chandler*)
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CROSSREFS
| Sequence in context: A039432 A043255 A044035 * A066475 A106930 A106929
Adjacent sequences: A124473 A124474 A124475 * A124477 A124478 A124479
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KEYWORD
| nonn,base
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AUTHOR
| Lekraj Beedassy (blekraj(AT)yahoo.com), Dec 17 2006
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EXTENSIONS
| Corrected and extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Dec 18 2006
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