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Search: id:A113317
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| A113317 |
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Exclusionary biquadrates (fourth powers). |
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+0
3
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| 16, 81, 256, 2401, 4096, 6561, 331776, 531441, 614656, 1048576, 3111696, 7311616, 7890481, 11316496, 12117361, 21051121, 62742241, 74805201, 1698181681, 4430766096, 6505390336, 11019960576, 11716114081, 479174066176
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OFFSET
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1,1
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COMMENT
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An exclusionary biquadrate m^4 is one sharing no digit in common with its root m made up of distinct digits. Is a subsequence of A113316. Conjectured to be complete.
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REFERENCES
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H. Ibstedt, Solution to Problem 2623,"Exclusionary Powers", pp. 346-9,Journal of Recreational Mathematics, vol. 32 No.4 2003-4 Baywood NY.
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CROSSREFS
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Adjacent sequences: A113314 A113315 A113316 this_sequence A113318 A113319 A113320
Sequence in context: A050463 A075578 A113316 this_sequence A056118 A134606 A108941
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KEYWORD
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base,nonn,fini
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AUTHOR
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Lekraj Beedassy (blekraj(AT)yahoo.com), Oct 26 2005
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EXTENSIONS
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Corrected by Don Reble, Nov 22 2006
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