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Search: id:A117764
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| A117764 |
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Lucas numbers for which the sum of the digits is also a Lucas number. |
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+0
1
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| 1, 3, 4, 7, 29, 47, 322, 2207, 1149851, 10749957122, 119218851371, 312119004989, 505019158607, 84722519070079276, 8784200221406821330636, 1473646213395791149646646123, 2657608295638762232902023676028758508503879
(list; graph; listen)
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OFFSET
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0,2
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EXAMPLE
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1149851 is in the sequence because (1) it is a Lucas number and (2)the sum of its digits 1+1+4+9+8+5+1=29 is also a Lucas number.
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CROSSREFS
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Cf. A000204.
Sequence in context: A145593 A042037 A041091 this_sequence A007677 A113874 A042773
Adjacent sequences: A117761 A117762 A117763 this_sequence A117765 A117766 A117767
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KEYWORD
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base,nonn
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AUTHOR
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Luc Stevens (lms022(AT)yahoo.com), Apr 15 2006
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EXTENSIONS
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More terms from Joshua Zucker (joshua.zucker(AT)stanfordalumni.org), May 11 2006
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