This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A094142 #6 Mar 31 2012 10:26:02 %S A094142 6,15,28,42,45,99,72,66,91,143,110,170,120,238,195,156,153,322,304, %T A094142 190,210,299,437,231,323,272,350,589,276,525,493,460,399,325,660,696, %U A094142 558,464,378,550,483,420,627,527,435,814,725,1025,575,506,496,1015,897,924 %N A094142 Smallest semiperimeter of primitive Pythagorean triangle whose legs differ by A058529(n). %C A094142 This is the product m*(m+y), with m=x+y, of the smallest positive solution pair (x, y) to x^2 - 2*y^2 = -+d, where d=A058529(n). %Y A094142 Cf. A058529, A094136, A094137, A094138, A094140, A094143. %K A094142 nonn %O A094142 1,1 %A A094142 _Lekraj Beedassy_, May 04 2004 %E A094142 Corrected and extended by _Ray Chandler_, Jun 20 2004