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Search: id:A113765
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| A113765 |
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Define the first two terms to be 1 and 7. All the other terms are obtained by concatenating the two previous terms. |
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1
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| 1, 7, 17, 717, 17717, 71717717, 1771771717717, 717177171771771717717, 1771771717717717177171771771717717, 7171771717717717177171771771717717717177171771771717717
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OFFSET
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0,2
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COMMENT
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a(n) has Fibonacci(n) digits and the sum of all digits is given by Fibonacci(n-2)+7*Fibonacci(n-1) for all n>4. - Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Jan 21 2006
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EXAMPLE
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The third term is 17 and it is obtained by concatenating the two previous terms 1 and 7.
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CROSSREFS
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Cf. A008352, A113526.
Cf. A000045 - the Fibonacci numbers.
Adjacent sequences: A113762 A113763 A113764 this_sequence A113766 A113767 A113768
Sequence in context: A077715 A089563 A102266 this_sequence A001145 A093139 A138491
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KEYWORD
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nonn,base
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AUTHOR
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Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Jan 18 2006
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EXTENSIONS
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More terms from Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Jan 21 2006
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