OFFSET
1,1
LINKS
Charles R Greathouse IV, Table of n, a(n) for n = 1..10000
FORMULA
a(n) = n + O(log n). - Charles R Greathouse IV, Oct 30 2016
EXAMPLE
106 is in this sequence because it is not in any Fibonacci sequence starting with two 1-digit numbers.
MATHEMATICA
With[{nn = 226}, Complement[Range@ nn, TakeWhile[Union@ Flatten@ Map[LinearRecurrence[{1, 1}, #, 1 + Floor[1/2 + Log[GoldenRatio, Sqrt[5] nn]]] &, Tuples[Range@ 9, 2]], # <= nn &]]] (* Michael De Vlieger, Aug 19 2017 *)
PROG
(PARI) is(n)=if(n<106, return(0)); for(a=1, 9, for(b=1, 9, my(x=a, y=a+b); while(y<n, [x, y]=[y, x+y]); if(y==n, return(0)))); 1 \\ Charles R Greathouse IV, Oct 30 2016
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Bobby Jacobs, Oct 23 2016
EXTENSIONS
More terms from Bobby Jacobs, Oct 29 2016
STATUS
approved