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Search: id:A067864
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| A067864 |
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Numbers n such that n divides the sum of digits of 6^n. |
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+0
2
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OFFSET
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1,1
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COMMENT
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Conjecture: the sequence is finite, since (sum of the digits of 6^n)/n->log_10(6)*4.5~3.50168 as n->00 (this is also a conjecture). - Robert Gerbicz (robert.gerbicz(AT)gmail.com), May 08 2008
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EXAMPLE
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a(1)=3, so 3 divides sum of digits of 6^3 (i.e.2+1+6=9).
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CROSSREFS
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Adjacent sequences: A067861 A067862 A067863 this_sequence A067865 A067866 A067867
Sequence in context: A101652 A026565 A133136 this_sequence A097267 A043097 A084670
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KEYWORD
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hard,more,nonn,base
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com) and Shyam Sunder Gupta (guptass(AT)rediffmail.com), Feb 16 2002
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