OFFSET
1,1
COMMENTS
a(19) > 1.e14 if it exists. - Hugo van der Sanden, Aug 06 2021
EXAMPLE
a(4)=203 because 203 = 7*29, 209 = 11*19, 215 = 5*43, 221 = 13*17.
CROSSREFS
KEYWORD
nonn,fini
AUTHOR
Don Reble, Feb 25 2004
EXTENSIONS
a(8) and a(9) corrected and a(18) from Donovan Johnson, Oct 01 2010
STATUS
approved