OFFSET
1,1
FORMULA
EXAMPLE
a(1)=6 since the 6th Fibonacci: 8 begins with 8.
a(2)=11 since the 11th Fibonacci: 89 begins with 8.
MATHEMATICA
Flatten[Position[Fibonacci[Range[1000]], _?(First[IntegerDigits[#]]==8&)]] (* Harvey P. Dale, Jan 04 2015 *)
PROG
(PARI) isok(n) = digits(fibonacci(n))[1] == 8; \\ Michel Marcus, Jan 10 2014
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Reinhard Zumkeller, Apr 11 2005
EXTENSIONS
Example and formulas edited by Michel Marcus, Jan 10 2014
STATUS
approved