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Search: id:A076086
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| A076086 |
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a(1) = 1; a(n) is the smallest multiple of a(n-1) not divisible by 10 which is greater than the digit reversal of a(n-1). In case R(a(n-1)) < a(n-1) then a(n) = 2*a(n-1). |
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+0
1
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| 1, 2, 4, 8, 16, 64, 128, 896, 1792, 3584, 7168, 14336, 86016, 172032, 344064, 688128, 1376256, 8257536, 16515072, 33030144, 66060288, 132120576, 792723456, 1585446912, 3170893824, 6341787648, 12683575296, 76101451776, 152202903552
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OFFSET
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1,2
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EXAMPLE
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a(4) = 16 hence a(5) =64 = 4*16 >61. But 64 is > 46 hence a(6) = 2*64 = 128.
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CROSSREFS
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Sequence in context: A018735 A041013 A018754 this_sequence A074700 A013133 A012997
Adjacent sequences: A076083 A076084 A076085 this_sequence A076087 A076088 A076089
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KEYWORD
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base,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Oct 07 2002
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EXTENSIONS
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More terms from David Wasserman (dwasserm(AT)earthlink.net), Mar 25 2005
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