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A111116
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Numbers n such that digits of n are not present in n^4.
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3
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2, 3, 4, 7, 8, 9, 24, 27, 28, 32, 33, 42, 52, 53, 58, 59, 67, 77, 88, 89, 93, 202, 203, 258, 284, 303, 324, 329, 377, 383, 422, 669, 818, 832, 843, 878, 882, 887, 949, 2027, 2042, 2673, 3144, 3222, 3253, 3302, 3308, 3737, 3773, 3953, 3979, 3983, 4779, 5353, 5669
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| The number of k-digit numbers for which this occurs is: 6,15,18,32,21,14,20,...
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FORMULA
| Intersection( the digits of A000027, the digits of A000583) is null.
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MATHEMATICA
| Select[Range[6000], Intersection[IntegerDigits[ # ], IntegerDigits[ #^4]] == {} &] (*Chandler*)
fQ[n_] := Intersection[ Union[ IntegerDigits[n]], Union[ IntegerDigits[n^4]]] == {}; Select[ Range[ 5887], fQ[ # ] &] (* Robert G. Wilson v *)
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CROSSREFS
| Cf. A029783, A029785.
For the corresponding n^4, see A113316.
Sequence in context: A112736 A059930 A125965 * A113318 A056033 A047547
Adjacent sequences: A111113 A111114 A111115 * A111117 A111118 A111119
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KEYWORD
| base,nonn
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AUTHOR
| Lekraj Beedassy (blekraj(AT)yahoo.com), Oct 15 2005
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EXTENSIONS
| Corrected and extended by Robert G. Wilson v (rgwv(at)rgwv.com) and Ray Chandler (rayjchandler(AT)sbcglobal.net), Oct 17 2005
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