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%I #5 Nov 21 2013 12:49:19
%S 0,1,1,8,89,144,610,4181,10946,196418
%N Fibonacci numbers where no digit is a prime.
%C No more terms up to Fibonacci[10000). [From Harvey P. Dale, Oct 10 2011]
%e 196418 is 27th Fibonacci number in which every digit is not a prime.
%p ap := proc(n) local i, j, st, st_mn, ans, stevec; ans := [ ]: for i from 0 to n do st := combinat[fibonacci](i): st_mn := convert(convert(st, base, 10), set): stevec := 0: for j from 1 to nops(st_mn) do if (member(op(j,st_mn), {0, 1, 4, 6, 8, 9}) = true) then stevec := stevec + 1: fi od; if (stevec = nops(st_mn)) then ans:=[ op(ans), st ]: fi od; RETURN(ans): end: ap(100000);
%t Select[Fibonacci[Range[0,10000]],Union[PrimeQ[IntegerDigits[#]]] =={False}&] (* _Harvey P. Dale_, Oct 10 2011 *)
%Y Cf. A000045, A136340.
%K nonn,base
%O 1,4
%A _Jani Melik_, Apr 22 2008
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