OFFSET
1,1
EXAMPLE
7728 = 97^2-41^2 = 107^2-61^2 = 113^2-71^2 = 173^2-149^2 =
283^2-269^2 = 487^2-479^2 = 647^2-641^2 = 1933^2-1931^2
CROSSREFS
KEYWORD
nonn
AUTHOR
Ray Chandler, Feb 22 2004
STATUS
approved