OFFSET
1,1
EXAMPLE
2 is a term because 2-2=0 is not prime.
3 is a term because 3-3=0 is not prime.
11 is a term because 1+1-1=1 is not prime.
19 is a term because 1+9-1=9 is not prime.
29 is a term because 2+9-2=9 is not prime.
CROSSREFS
KEYWORD
nonn,base,less
AUTHOR
Juri-Stepan Gerasimov, Mar 12 2009
EXTENSIONS
378 and 383 removed by R. J. Mathar, Mar 17 2009
STATUS
approved