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A113765
Define the first two terms to be 1 and 7. All the other terms are obtained by concatenating the two previous terms.
0
1, 7, 17, 717, 17717, 71717717, 1771771717717, 717177171771771717717, 1771771717717717177171771771717717, 7171771717717717177171771771717717717177171771771717717
OFFSET
0,2
COMMENTS
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, Jan 21 2006
EXAMPLE
The third term is 17 and it is obtained by concatenating the two previous terms 1 and 7.
CROSSREFS
Cf. A000045 - the Fibonacci numbers.
Sequence in context: A089563 A159028 A102266 * A269447 A013540 A153375
KEYWORD
nonn,base
AUTHOR
Parthasarathy Nambi, Jan 18 2006
EXTENSIONS
More terms from Stefan Steinerberger, Jan 21 2006
STATUS
approved