OFFSET
1,1
EXAMPLE
Altering a(2)=33 gives 8 primes: 13, 23, 43, 53, 73, 83, 31 and 37.
CROSSREFS
KEYWORD
nonn,base,new
AUTHOR
Patrick De Geest (pdg(AT)worldofnumbers.com), Jul 15 1999.
STATUS
approved