OFFSET
1,1
COMMENTS
Primitiveness condition prescribes that, if n is in the sequence because of the interior point (x, y), then GCD(x, y, n) = 1.
Some values admit more than one qualifying interior point. For example, for n = 21125 we have both (4416, 3737) and (8357, 7524).
This sequence is a superset of A215365, which only contains even values.
LINKS
Giovanni Resta, Table of n, a(n) for n = 1..75 (terms < 130000)
EXAMPLE
700 is in the sequence because the point (304,297) is at distance 425 from (0,0), 495 from (700,0) and 565 from (700,700) and GCD(700,304,297) = 1.
CROSSREFS
KEYWORD
nonn
AUTHOR
Mark Underwood and Giovanni Resta, Jul 29 2015
STATUS
approved