OFFSET
1,1
COMMENTS
Subsequence of A002144.
EXAMPLE
41 is in the sequence because 5*41=205 appears in the two prime-free primitive Pythagorean triangles: (123^2 + 164^2 = 205^2),(133^2 + 156^2 = 205^2).
CROSSREFS
KEYWORD
nonn
AUTHOR
Lekraj Beedassy, Oct 28 2003
EXTENSIONS
More terms from Ray Chandler, Oct 31 2003
STATUS
approved