OFFSET
1,5
LINKS
Alois P. Heinz, Table of n, a(n) for n = 1..10000
Casey Mongoven, Absent Residues Primes no. 1; electro-acoustic music created with this sequence.
EXAMPLE
The 5th prime number is 11. The Fibonacci sequence mod 11 is {0,1,1,2,3,5,8,2,10,1,0,1,...} - a periodic sequence. There are 4 residues which do not occur in this sequence, namely {4,6,7,9}. So a(5) = 4.
CROSSREFS
KEYWORD
nonn
AUTHOR
Casey Mongoven, Feb 10 2008
STATUS
approved