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 A018850 #34 Feb 16 2025 08:32:33 %S A018850 1729,4104,20683,39312,40033,64232,65728,134379,149389,171288,195841, %T A018850 216027,327763,402597,439101,443889,515375,684019,704977,805688, %U A018850 842751,920673,955016,984067,994688,1009736,1016496,1073375,1092728,1331064 %N A018850 Numbers that are the sum of 2 cubes in more than 1 way (primitive solutions). %C A018850 Nakao's table has more entries because he lists nonprimitive numbers if they are the sum of two cubes in three ways. %C A018850 _Rajesh Bhowmick_, Dec 12 2011: The odd number 40533595075161 can be represented as sum of two cubes in just two different ways: (34314)^(3)+(5073)^(3) = (34321)^(3)+(4730)^(3). Here, the cubes are greater than 1, there is no common factor between the odd numbers, there is no common factor between the L.H.S & the R.H.S, the even number is greater than 2, the cubes are in their primitive form, and they are not of the form (27)^(3) or (121)^(3) (which are actually (3)^(9) & (11)^(6)). %H A018850 Shahar Amitai, <a href="/A018850/b018850.txt">Table of n, a(n) for n = 1..9859</a> (terms a(1)-a(1694) from T. D. Noe). %H A018850 Shahar Amitai, <a href="/A018850/a018850.txt">Python code to generate all primitive taxicab numbers up to N.</a> %H A018850 H. Nakao, <a href="http://www.kaynet.or.jp/~kay/misc/log/rtaxi.log">Ramanujan Taxi Numbers [1...1000000000]</a> %H A018850 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/CubicNumber.html">Cubic Number</a> %Y A018850 Cf. A001235. %K A018850 nonn %O A018850 1,1 %A A018850 _David W. Wilson_