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%I #17 Nov 07 2017 20:24:30
%S 1,4,5,9,10,14,16,20,25,30,35,36,40,45,49,55,56,64,80,81,84,90,91,100,
%T 105,120,121,125,126,140,144,154,160,165,169,180,196,204,220,224,225,
%U 231,245,250,256,260,270,285,286,289,315,320,324,336,350,360,361,364,385,390
%N The areas of Pythagorean triangles divided by 6.
%C Number of terms less than 10^k: 4, 23, 109, 462, 1861, 7255, 27042, 95703, 314534, ..., .
%C This is A009112/6. - _T. D. Noe_, Oct 08 2013
%C Same as A256418/24, i.e., congrua/24. - _Jonathan Sondow_, Nov 07 2017
%D Albert H. Beiler, Recreations in the Theory of Numbers, The Queen of Mathematics Entertains, 2nd Ed., Chpt. XIV, "The Eternal Triangle", pp. 104-134, Dover Publ., NY, 1964.
%F A009112(n)/6.
%t (* First run the program given for A009112 *) Union[t/6]
%Y Cf. A009112, A256418.
%K nonn
%O 1,2
%A _Robert G. Wilson v_, Dec 14 2010