Search: id:A010814
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%I A010814
%S A010814 12,24,30,36,40,48,56,60,70,72,80,84,90,96,108,112,120,126,132,140,144,
%T A010814 150,154,156,160,168,176,180,182,192,198,200,204,208,210,216,220,224,
%U A010814 228,234,240,252,260,264,270,276,280,286,288,300,306,308,312,320,324
%N A010814 Perimeters of integer-sided right triangles.
%C A010814 A number n is in this sequence iff n is a multiple of some term in A024364.
%H A010814 Ron Knott, <a href="http://www.mcs.surrey.ac.uk/Personal/R.Knott/Pythag/
               pythag.html">Pythagorean Triples and Online Calculators</a>
%H A010814 <a href="Sindx_Ps.html#PyTrip">Index entries related to Pythagorean Triples.</
               a>
%p A010814 isA010814 := proc(an) local a::integer,b::integer,c::integer ; for c 
               from 1 to floor(an/2) do for a from floor(c/sqrt(2)) to c-1 do if 
               issqr(c^2-a^2) then b := sqrt(c^2-a^2) ; if a+b+c = an then RETURN(true) 
               ; fi ; fi ; od ; od : RETURN(false) ; end : for n from 3 to 400 do 
               if isA010814(n) then printf("%d,",n) ; fi ; od ; - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), 
               Jun 08 2006
%Y A010814 Twice A005279.
%Y A010814 Sequence in context: A074697 A027854 A009096 this_sequence A098714 A108938 
               A085236
%Y A010814 Adjacent sequences: A010811 A010812 A010813 this_sequence A010815 A010816 
               A010817
%K A010814 nonn
%O A010814 1,1
%A A010814 manvel(AT)lagrange.math.colostate.edu (Ben Manvel)
%E A010814 More terms from Ray Chandler (rayjchandler(AT)sbcglobal.net), Mar 13 
               2004

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