A177247 Fibonacci numbers Fib(n) whose decimal expansion does not contain any digit 6.

1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377, 987, 1597, 2584, 4181, 17711, 75025, 121393, 317811, 514229, 832040, 2178309, 3524578, 5702887, 14930352, 24157817, 102334155, 433494437, 701408733, 1134903170, 2971215073, 7778742049

Offset: 1

Author

Carmine Suriano, May 06 2010

Keywords

• nonn
• base

Comments

Probability that Fib(n) contains no 6's goes to zero as n grows to infinity. I suppose the maximum number is F(258) having 54 digits with no 6's.

Examples

			a(7)=13 since it is the 7th Fibonacci having no 6's
		

Crossrefs

Cf. A000045, A177194, A177195, A177231, A177245, A177246, A176253

Programs

Mathematica

Select[Fibonacci[Range[100]],DigitCount[#,10,6]==0&] (* Harvey P. Dale, Aug 26 2023 *)