%I #11 Jan 23 2020 14:28:20
%S 6,20,24,30,42,60,70,72,80,88,104,110,112,126,130,140,154,156,170,180,
%T 198,204,210,228,234,238,252,264,266,272,286,304,308,322,330,336,342,
%U 352,364,368,374,390,396,400,414,416,420,432,442,450,460,468,480,494,506,510
%N Ordered set of b + c  a as (a,b,c) runs through all primitive Pythagorean triples with a<b<c.
%H Ray Chandler, <a href="/A020889/b020889.txt">Table of n, a(n) for n = 1..10000</a>
%F a(n) = 2*A020890(n).
%Y Cf. A020890.
%K nonn
%O 1,1
%A _Clark Kimberling_
%E Extended and corrected by _David W. Wilson_
%E Offset corrected to 1 by _Ray Chandler_, Jan 23 2020
