OFFSET
1,2
EXAMPLE
2,3,6,8,12,14,15,16,...is the sequence of positive integers which do not occur among the first 5 terms of the sequence and which are not coprime to 6. 14 is the 6th of these integers, so a(6) = 14.
CROSSREFS
KEYWORD
nonn
AUTHOR
Leroy Quet, Aug 20 2006
EXTENSIONS
Extended by Ray Chandler, Aug 22 2006
STATUS
approved